./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:23:24,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:23:24,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:23:24,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:23:24,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:23:24,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:23:24,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:23:24,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:23:24,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:23:24,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:23:24,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:23:24,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:23:24,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:23:24,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:23:24,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:23:24,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:23:24,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:23:24,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:23:24,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:23:24,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:23:24,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:23:24,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:23:24,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:23:24,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:23:24,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:23:24,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:23:24,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:23:24,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:23:24,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:23:24,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:23:24,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:23:24,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:23:24,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:23:24,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:23:24,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:23:24,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:23:24,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:23:24,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:23:24,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:23:24,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:23:24,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:23:24,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:23:24,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:23:24,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:23:24,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:23:24,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:23:24,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:23:24,770 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:23:24,770 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:23:24,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:23:24,770 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:23:24,771 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:23:24,771 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:23:24,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:23:24,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:23:24,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:23:24,772 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:23:24,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:23:24,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:23:24,773 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:23:24,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:23:24,774 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:23:24,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:23:24,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:23:24,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:23:24,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:23:24,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:23:24,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:23:24,775 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:23:24,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:23:24,776 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:23:24,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:23:24,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:23:24,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:23:24,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:24,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:23:24,777 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:23:24,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:23:24,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:23:24,778 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:23:24,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:23:24,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:23:24,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:23:24,778 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_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f40464de6444b4c527a3fd043e201dc912ddaed5b163e61d0d1df63c7a25d4d [2022-11-03 02:23:25,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:23:25,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:23:25,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:23:25,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:23:25,131 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:23:25,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2022-11-03 02:23:25,222 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/data/6bd8f4f95/d22c45fb1e0245f78eacde724e2a0044/FLAGca36453da [2022-11-03 02:23:26,019 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:23:26,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c [2022-11-03 02:23:26,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/data/6bd8f4f95/d22c45fb1e0245f78eacde724e2a0044/FLAGca36453da [2022-11-03 02:23:26,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/data/6bd8f4f95/d22c45fb1e0245f78eacde724e2a0044 [2022-11-03 02:23:26,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:23:26,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:23:26,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:26,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:23:26,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:23:26,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:26" (1/1) ... [2022-11-03 02:23:26,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c84b560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:26, skipping insertion in model container [2022-11-03 02:23:26,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:26" (1/1) ... [2022-11-03 02:23:26,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:23:26,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:26,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2022-11-03 02:23:27,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:27,013 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:27,044 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/sv-benchmarks/c/product-lines/email_spec3_product28.cil.c[6522,6535] [2022-11-03 02:23:27,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:27,155 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:27,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27 WrapperNode [2022-11-03 02:23:27,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:27,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:27,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:27,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:27,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,234 INFO L138 Inliner]: procedures = 129, calls = 217, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 884 [2022-11-03 02:23:27,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:27,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:27,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:27,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:27,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,291 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:27,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:27,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:27,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:27,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (1/1) ... [2022-11-03 02:23:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:27,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:27,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:27,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 02:23:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 02:23:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:23:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:23:27,416 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:23:27,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:23:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:23:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:23:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:23:27,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:23:27,417 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:23:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:23:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:23:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:23:27,418 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:23:27,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:23:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 02:23:27,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 02:23:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:23:27,419 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:23:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:23:27,419 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:23:27,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:23:27,420 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:23:27,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:23:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:23:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 02:23:27,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 02:23:27,421 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 02:23:27,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 02:23:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:23:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:23:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 02:23:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 02:23:27,422 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:23:27,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:23:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:23:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:23:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 02:23:27,423 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 02:23:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:23:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:23:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:23:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:23:27,425 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:23:27,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:23:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:23:27,426 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:23:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:23:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:27,677 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:27,680 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:28,697 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:29,254 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:29,254 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:23:29,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:29 BoogieIcfgContainer [2022-11-03 02:23:29,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:29,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:29,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:29,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:29,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:23:26" (1/3) ... [2022-11-03 02:23:29,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad0638f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:29, skipping insertion in model container [2022-11-03 02:23:29,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:27" (2/3) ... [2022-11-03 02:23:29,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad0638f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:29, skipping insertion in model container [2022-11-03 02:23:29,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:29" (3/3) ... [2022-11-03 02:23:29,272 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product28.cil.c [2022-11-03 02:23:29,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:29,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:23:29,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:29,350 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;@12a1a4b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:29,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:23:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 116 states have internal predecessors, (147), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-03 02:23:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:23:29,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:29,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:29,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:29,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:29,384 INFO L85 PathProgramCache]: Analyzing trace with hash 432371370, now seen corresponding path program 1 times [2022-11-03 02:23:29,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:29,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722989205] [2022-11-03 02:23:29,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:29,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:29,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:29,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722989205] [2022-11-03 02:23:29,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722989205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:29,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:29,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:23:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467991149] [2022-11-03 02:23:29,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:23:29,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:23:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:23:29,868 INFO L87 Difference]: Start difference. First operand has 190 states, 110 states have (on average 1.3363636363636364) internal successors, (147), 116 states have internal predecessors, (147), 55 states have call successors, (55), 23 states have call predecessors, (55), 23 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:30,045 INFO L93 Difference]: Finished difference Result 296 states and 392 transitions. [2022-11-03 02:23:30,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:23:30,048 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-11-03 02:23:30,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:30,072 INFO L225 Difference]: With dead ends: 296 [2022-11-03 02:23:30,073 INFO L226 Difference]: Without dead ends: 186 [2022-11-03 02:23:30,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:23:30,090 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:30,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-03 02:23:30,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-03 02:23:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 112 states have internal predecessors, (141), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:23:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2022-11-03 02:23:30,151 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 80 [2022-11-03 02:23:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:30,153 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2022-11-03 02:23:30,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2022-11-03 02:23:30,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-03 02:23:30,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:30,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:30,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:23:30,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:30,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1324908150, now seen corresponding path program 1 times [2022-11-03 02:23:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:30,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519050556] [2022-11-03 02:23:30,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:30,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:30,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:30,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519050556] [2022-11-03 02:23:30,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519050556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:30,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:30,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:30,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037537385] [2022-11-03 02:23:30,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:30,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:30,532 INFO L87 Difference]: Start difference. First operand 186 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:30,707 INFO L93 Difference]: Finished difference Result 291 states and 376 transitions. [2022-11-03 02:23:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 81 [2022-11-03 02:23:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:30,710 INFO L225 Difference]: With dead ends: 291 [2022-11-03 02:23:30,710 INFO L226 Difference]: Without dead ends: 188 [2022-11-03 02:23:30,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:30,713 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:30,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 435 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-03 02:23:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-03 02:23:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 110 states have (on average 1.3) internal successors, (143), 114 states have internal predecessors, (143), 55 states have call successors, (55), 23 states have call predecessors, (55), 22 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 02:23:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2022-11-03 02:23:30,740 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 81 [2022-11-03 02:23:30,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:30,741 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2022-11-03 02:23:30,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:30,743 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2022-11-03 02:23:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:23:30,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:30,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:30,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:23:30,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1800007245, now seen corresponding path program 1 times [2022-11-03 02:23:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928999900] [2022-11-03 02:23:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:30,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:30,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928999900] [2022-11-03 02:23:30,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928999900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:30,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:30,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:30,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838568194] [2022-11-03 02:23:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:30,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:30,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:30,997 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:31,117 INFO L93 Difference]: Finished difference Result 406 states and 559 transitions. [2022-11-03 02:23:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:31,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2022-11-03 02:23:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:31,120 INFO L225 Difference]: With dead ends: 406 [2022-11-03 02:23:31,121 INFO L226 Difference]: Without dead ends: 236 [2022-11-03 02:23:31,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:31,123 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 57 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:31,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 450 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:23:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-03 02:23:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2022-11-03 02:23:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 142 states have (on average 1.380281690140845) internal successors, (196), 146 states have internal predecessors, (196), 66 states have call successors, (66), 23 states have call predecessors, (66), 22 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:23:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 325 transitions. [2022-11-03 02:23:31,164 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 325 transitions. Word has length 86 [2022-11-03 02:23:31,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:31,167 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 325 transitions. [2022-11-03 02:23:31,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 325 transitions. [2022-11-03 02:23:31,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:23:31,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:31,176 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:31,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:23:31,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1691435266, now seen corresponding path program 1 times [2022-11-03 02:23:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:31,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286601499] [2022-11-03 02:23:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:31,483 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:31,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:31,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286601499] [2022-11-03 02:23:31,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286601499] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:23:31,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224260618] [2022-11-03 02:23:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:23:31,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:31,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:23:31,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:23:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:31,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:23:31,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:23:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:31,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:23:32,038 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:23:32,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224260618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:23:32,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [825145219] [2022-11-03 02:23:32,059 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-03 02:23:32,060 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:23:32,064 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:23:32,069 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:23:32,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:24:15,824 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-03 02:24:16,257 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-11-03 02:24:16,703 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:24:39,217 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:24:45,066 WARN L234 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 477 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:09,570 WARN L234 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 510 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:32,082 WARN L234 SmtUtils]: Spent 16.19s on a formula simplification. DAG size of input: 585 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:39,088 WARN L234 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 568 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:47,830 WARN L234 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 570 DAG size of output: 330 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:25:55,276 WARN L234 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 572 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:02,703 WARN L234 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 568 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:26:04,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [825145219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:04,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:26:04,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-11-03 02:26:04,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525064811] [2022-11-03 02:26:04,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 02:26:04,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 02:26:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:26:04,010 INFO L87 Difference]: Start difference. First operand 231 states and 325 transitions. Second operand has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-03 02:26:13,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:13,863 INFO L93 Difference]: Finished difference Result 541 states and 811 transitions. [2022-11-03 02:26:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 02:26:13,864 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 87 [2022-11-03 02:26:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:13,868 INFO L225 Difference]: With dead ends: 541 [2022-11-03 02:26:13,868 INFO L226 Difference]: Without dead ends: 328 [2022-11-03 02:26:13,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 107.3s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:26:13,870 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 141 mSDsluCounter, 2755 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:13,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 2966 Invalid, 2013 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-11-03 02:26:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-03 02:26:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 254. [2022-11-03 02:26:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 164 states have (on average 1.396341463414634) internal successors, (229), 168 states have internal predecessors, (229), 66 states have call successors, (66), 24 states have call predecessors, (66), 23 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-11-03 02:26:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 358 transitions. [2022-11-03 02:26:13,993 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 358 transitions. Word has length 87 [2022-11-03 02:26:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:13,993 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 358 transitions. [2022-11-03 02:26:13,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 7 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-03 02:26:13,994 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 358 transitions. [2022-11-03 02:26:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:26:13,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:13,996 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:14,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:26:14,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:14,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:14,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash -551190023, now seen corresponding path program 1 times [2022-11-03 02:26:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:14,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914319526] [2022-11-03 02:26:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:26:14,347 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:14,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914319526] [2022-11-03 02:26:14,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914319526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:14,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:14,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636119701] [2022-11-03 02:26:14,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:14,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:14,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:14,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:14,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:14,351 INFO L87 Difference]: Start difference. First operand 254 states and 358 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:26:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:14,625 INFO L93 Difference]: Finished difference Result 601 states and 880 transitions. [2022-11-03 02:26:14,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 92 [2022-11-03 02:26:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:14,630 INFO L225 Difference]: With dead ends: 601 [2022-11-03 02:26:14,630 INFO L226 Difference]: Without dead ends: 371 [2022-11-03 02:26:14,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:14,635 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 55 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:14,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 451 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:14,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-03 02:26:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 366. [2022-11-03 02:26:14,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 251 states have (on average 1.454183266932271) internal successors, (365), 255 states have internal predecessors, (365), 91 states have call successors, (91), 24 states have call predecessors, (91), 23 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-03 02:26:14,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 544 transitions. [2022-11-03 02:26:14,868 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 544 transitions. Word has length 92 [2022-11-03 02:26:14,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:14,868 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 544 transitions. [2022-11-03 02:26:14,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:26:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 544 transitions. [2022-11-03 02:26:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:26:14,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:14,871 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:14,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:26:14,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:14,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:14,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1114484453, now seen corresponding path program 1 times [2022-11-03 02:26:14,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:14,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361623968] [2022-11-03 02:26:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:14,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:15,020 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:26:15,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361623968] [2022-11-03 02:26:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361623968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:26:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720953045] [2022-11-03 02:26:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:15,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:26:15,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:26:15,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:26:15,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:26:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:15,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:26:15,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:26:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:26:15,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:26:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 02:26:15,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720953045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:26:15,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1446779433] [2022-11-03 02:26:15,429 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-03 02:26:15,429 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:26:15,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:26:15,430 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:26:15,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:27:01,519 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:27:01,834 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-03 02:27:02,201 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:27:15,256 WARN L234 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:21,024 WARN L234 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:27:55,090 WARN L234 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 510 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:23,393 WARN L234 SmtUtils]: Spent 22.33s on a formula simplification. DAG size of input: 589 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:31,180 WARN L234 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 568 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:39,028 WARN L234 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 570 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:48,560 WARN L234 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 572 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:28:58,015 WARN L234 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 568 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:08,372 WARN L234 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 570 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:18,699 WARN L234 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 566 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:22,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1446779433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:22,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:29:22,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-11-03 02:29:22,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452578898] [2022-11-03 02:29:22,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:22,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:29:22,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:22,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:29:22,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:29:22,887 INFO L87 Difference]: Start difference. First operand 366 states and 544 transitions. Second operand has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-03 02:29:43,493 WARN L234 SmtUtils]: Spent 18.86s on a formula simplification. DAG size of input: 571 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:49,056 WARN L234 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 326 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:29:54,703 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 356 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:00,261 WARN L234 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 352 DAG size of output: 336 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:06,589 WARN L234 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 539 DAG size of output: 368 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:12,890 WARN L234 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 535 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:30:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:25,667 INFO L93 Difference]: Finished difference Result 826 states and 1288 transitions. [2022-11-03 02:30:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 02:30:25,668 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 93 [2022-11-03 02:30:25,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:25,675 INFO L225 Difference]: With dead ends: 826 [2022-11-03 02:30:25,675 INFO L226 Difference]: Without dead ends: 523 [2022-11-03 02:30:25,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 193.0s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:30:25,677 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 323 mSDsluCounter, 3350 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 2270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:25,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 3503 Invalid, 2270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 2236 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 02:30:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-03 02:30:25,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 428. [2022-11-03 02:30:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 309 states have (on average 1.5016181229773462) internal successors, (464), 315 states have internal predecessors, (464), 94 states have call successors, (94), 25 states have call predecessors, (94), 24 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-03 02:30:25,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 649 transitions. [2022-11-03 02:30:25,916 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 649 transitions. Word has length 93 [2022-11-03 02:30:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:25,916 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 649 transitions. [2022-11-03 02:30:25,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-03 02:30:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 649 transitions. [2022-11-03 02:30:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:30:25,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:25,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:25,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:30:26,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:26,132 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:26,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1525821805, now seen corresponding path program 1 times [2022-11-03 02:30:26,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:26,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680886957] [2022-11-03 02:30:26,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:26,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:30:26,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:26,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680886957] [2022-11-03 02:30:26,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680886957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:26,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933671624] [2022-11-03 02:30:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:26,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:30:26,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:30:26,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:30:26,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a90de036-517e-42ab-b44e-0cc1f062a353/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:30:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:26,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:30:26,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:30:26,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 02:30:26,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933671624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:30:26,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [588366799] [2022-11-03 02:30:26,770 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-11-03 02:30:26,770 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:30:26,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:30:26,772 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:30:26,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:32:29,768 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-03 02:32:30,169 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-03 02:32:30,468 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-03 02:32:30,910 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 238 for LOIs [2022-11-03 02:32:31,526 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-11-03 02:32:31,591 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 454 for LOIs [2022-11-03 02:32:31,991 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 233 for LOIs [2022-11-03 02:33:26,763 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 220 for LOIs [2022-11-03 02:33:26,788 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 409 for LOIs [2022-11-03 02:33:27,286 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 386 for LOIs [2022-11-03 02:33:27,531 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 223 for LOIs [2022-11-03 02:33:27,569 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 381 for LOIs [2022-11-03 02:33:27,761 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-03 02:33:29,363 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 225 for LOIs [2022-11-03 02:33:29,397 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:33:42,926 WARN L234 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:48,754 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:33:55,025 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 454 DAG size of output: 249 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:00,884 WARN L234 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 477 DAG size of output: 269 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:25,099 WARN L234 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 510 DAG size of output: 349 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:34:59,489 WARN L234 SmtUtils]: Spent 10.34s on a formula simplification. DAG size of input: 532 DAG size of output: 382 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:06,232 WARN L234 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 525 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:21,428 WARN L234 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 527 DAG size of output: 392 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:38,621 WARN L234 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 530 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:35:54,462 WARN L234 SmtUtils]: Spent 11.27s on a formula simplification. DAG size of input: 424 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:36:12,330 WARN L234 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 409 DAG size of output: 242 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:36:20,514 WARN L234 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 435 DAG size of output: 258 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)