./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 08:52:44,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:52:44,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:52:44,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:52:44,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:52:44,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:52:44,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:52:44,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:52:44,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:52:44,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:52:44,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:52:44,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:52:44,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:52:44,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:52:44,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:52:44,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:52:44,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:52:44,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:52:44,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:52:44,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:52:44,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:52:44,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:52:44,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:52:44,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:52:44,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:52:44,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:52:44,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:52:44,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:52:44,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:52:44,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:52:44,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:52:44,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:52:44,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:52:44,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:52:44,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:52:44,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:52:44,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:52:44,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:52:44,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:52:44,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:52:44,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:52:44,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:52:44,599 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:52:44,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:52:44,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:52:44,600 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:52:44,600 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:52:44,601 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:52:44,601 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:52:44,601 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:52:44,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:52:44,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:52:44,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:52:44,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:52:44,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:52:44,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:44,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:52:44,604 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:52:44,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:52:44,604 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:52:44,605 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:52:44,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:52:44,605 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:52:44,605 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:52:44,605 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_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2022-12-14 08:52:44,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:52:44,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:52:44,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:52:44,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:52:44,787 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:52:44,788 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-12-14 08:52:47,418 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:52:47,654 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:52:47,655 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-12-14 08:52:47,669 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/data/c135b3abb/a6593e6a298e49149795a7ede5008621/FLAGa44df51da [2022-12-14 08:52:47,682 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/data/c135b3abb/a6593e6a298e49149795a7ede5008621 [2022-12-14 08:52:47,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:52:47,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:52:47,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:47,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:52:47,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:52:47,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:47" (1/1) ... [2022-12-14 08:52:47,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65050943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:47, skipping insertion in model container [2022-12-14 08:52:47,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:47" (1/1) ... [2022-12-14 08:52:47,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:52:47,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:52:48,009 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,010 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,012 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,037 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-12-14 08:52:48,041 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,043 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,057 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,060 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,066 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:48,076 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:52:48,118 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,119 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,120 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,129 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-12-14 08:52:48,129 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,130 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,134 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,136 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,139 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 08:52:48,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:48,158 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:52:48,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48 WrapperNode [2022-12-14 08:52:48,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:48,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:48,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:52:48,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:52:48,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,256 INFO L138 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2022-12-14 08:52:48,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:48,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:52:48,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:52:48,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:52:48,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,298 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:52:48,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:52:48,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:52:48,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:52:48,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (1/1) ... [2022-12-14 08:52:48,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:48,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:52:48,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:52:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-14 08:52:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-14 08:52:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-14 08:52:48,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-14 08:52:48,363 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 08:52:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 08:52:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 08:52:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 08:52:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 08:52:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 08:52:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-14 08:52:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-14 08:52:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 08:52:48,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 08:52:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 08:52:48,364 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 08:52:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 08:52:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:52:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 08:52:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 08:52:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 08:52:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 08:52:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 08:52:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 08:52:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 08:52:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 08:52:48,365 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-14 08:52:48,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-14 08:52:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 08:52:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 08:52:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 08:52:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 08:52:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:52:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 08:52:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 08:52:48,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:52:48,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:52:48,514 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:52:48,517 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:52:49,029 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:52:49,273 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:52:49,273 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:52:49,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:49 BoogieIcfgContainer [2022-12-14 08:52:49,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:52:49,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:52:49,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:52:49,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:52:49,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:52:47" (1/3) ... [2022-12-14 08:52:49,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:49, skipping insertion in model container [2022-12-14 08:52:49,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:48" (2/3) ... [2022-12-14 08:52:49,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:49, skipping insertion in model container [2022-12-14 08:52:49,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:49" (3/3) ... [2022-12-14 08:52:49,281 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2022-12-14 08:52:49,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:52:49,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:52:49,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:52:49,351 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;@74ee6319, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:52:49,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:52:49,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-14 08:52:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 08:52:49,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:49,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:49,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -456328496, now seen corresponding path program 1 times [2022-12-14 08:52:49,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:49,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316116111] [2022-12-14 08:52:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:49,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:52:49,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:49,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316116111] [2022-12-14 08:52:49,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316116111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:52:49,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:52:49,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:52:49,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037474513] [2022-12-14 08:52:49,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:49,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:52:49,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:52:49,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:52:49,654 INFO L87 Difference]: Start difference. First operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:52:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:49,752 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2022-12-14 08:52:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:52:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2022-12-14 08:52:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:49,763 INFO L225 Difference]: With dead ends: 227 [2022-12-14 08:52:49,764 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 08:52:49,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:52:49,770 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:49,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:52:49,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 08:52:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-12-14 08:52:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 08:52:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 209 transitions. [2022-12-14 08:52:49,815 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 209 transitions. Word has length 56 [2022-12-14 08:52:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:49,816 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 209 transitions. [2022-12-14 08:52:49,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:52:49,817 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 209 transitions. [2022-12-14 08:52:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-14 08:52:49,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:49,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:52:49,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1641505551, now seen corresponding path program 1 times [2022-12-14 08:52:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:49,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221646159] [2022-12-14 08:52:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:52:49,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:49,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221646159] [2022-12-14 08:52:49,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221646159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:52:49,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:52:49,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:52:49,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685027595] [2022-12-14 08:52:49,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:49,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:49,974 INFO L87 Difference]: Start difference. First operand 152 states and 209 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:52:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:50,070 INFO L93 Difference]: Finished difference Result 223 states and 298 transitions. [2022-12-14 08:52:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:50,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2022-12-14 08:52:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:50,073 INFO L225 Difference]: With dead ends: 223 [2022-12-14 08:52:50,073 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 08:52:50,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:50,076 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:52:50,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:52:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 08:52:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-12-14 08:52:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.326086956521739) internal successors, (122), 95 states have internal predecessors, (122), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 08:52:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-12-14 08:52:50,093 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 57 [2022-12-14 08:52:50,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:50,094 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-12-14 08:52:50,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:52:50,094 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-12-14 08:52:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 08:52:50,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:50,096 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:50,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:52:50,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:50,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1562357831, now seen corresponding path program 1 times [2022-12-14 08:52:50,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:50,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113362342] [2022-12-14 08:52:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:50,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:52:50,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:50,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113362342] [2022-12-14 08:52:50,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113362342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:52:50,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:52:50,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:52:50,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926142517] [2022-12-14 08:52:50,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:52:50,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:52:50,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:52:50,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:52:50,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:50,217 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:52:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:52:50,322 INFO L93 Difference]: Finished difference Result 338 states and 481 transitions. [2022-12-14 08:52:50,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:52:50,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-12-14 08:52:50,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:52:50,325 INFO L225 Difference]: With dead ends: 338 [2022-12-14 08:52:50,325 INFO L226 Difference]: Without dead ends: 202 [2022-12-14 08:52:50,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:52:50,328 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 57 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 379 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 [2022-12-14 08:52:50,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 379 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:52:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-14 08:52:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2022-12-14 08:52:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 127 states have internal predecessors, (175), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-12-14 08:52:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2022-12-14 08:52:50,351 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 62 [2022-12-14 08:52:50,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:52:50,352 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2022-12-14 08:52:50,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-14 08:52:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2022-12-14 08:52:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 08:52:50,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:50,355 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:52:50,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:52:50,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:50,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1714183540, now seen corresponding path program 1 times [2022-12-14 08:52:50,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:50,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110001591] [2022-12-14 08:52:50,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:52:50,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:52:50,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110001591] [2022-12-14 08:52:50,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110001591] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:52:50,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290746940] [2022-12-14 08:52:50,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:50,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:52:50,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:50,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:52:50,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:52:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:52:50,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:52:50,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:52:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:52:50,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:52:50,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:52:50,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290746940] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:52:50,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [416479929] [2022-12-14 08:52:50,814 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 08:52:50,815 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:52:50,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:52:50,824 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:52:50,824 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:53:18,718 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 08:53:19,044 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 08:53:19,370 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 08:53:21,148 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-12-14 08:53:21,186 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-12-14 08:53:25,671 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 228 for LOIs [2022-12-14 08:53:25,706 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-12-14 08:53:27,721 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:54:15,481 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 568 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:21,429 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 570 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:54,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [416479929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:54:54,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:54:54,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 45 [2022-12-14 08:54:54,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933167423] [2022-12-14 08:54:54,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:54:54,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-14 08:54:54,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:54:54,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-14 08:54:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1861, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 08:54:54,182 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 08:55:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:17,200 INFO L93 Difference]: Finished difference Result 500 states and 772 transitions. [2022-12-14 08:55:17,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 08:55:17,201 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 63 [2022-12-14 08:55:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:17,203 INFO L225 Difference]: With dead ends: 500 [2022-12-14 08:55:17,203 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 08:55:17,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 96.1s TimeCoverageRelationStatistics Valid=152, Invalid=2298, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 08:55:17,205 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 141 mSDsluCounter, 4278 mSDsCounter, 0 mSdLazyCounter, 4807 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 4825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:17,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 4496 Invalid, 4825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4807 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-12-14 08:55:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 08:55:17,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 267. [2022-12-14 08:55:17,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 184 states have (on average 1.4619565217391304) internal successors, (269), 187 states have internal predecessors, (269), 62 states have call successors, (62), 22 states have call predecessors, (62), 20 states have return successors, (61), 59 states have call predecessors, (61), 61 states have call successors, (61) [2022-12-14 08:55:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 392 transitions. [2022-12-14 08:55:17,309 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 392 transitions. Word has length 63 [2022-12-14 08:55:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:17,309 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 392 transitions. [2022-12-14 08:55:17,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 25 states have internal predecessors, (33), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 08:55:17,309 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 392 transitions. [2022-12-14 08:55:17,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 08:55:17,311 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:17,311 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:17,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:55:17,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:17,513 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:17,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1201692635, now seen corresponding path program 1 times [2022-12-14 08:55:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:17,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672367697] [2022-12-14 08:55:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:55:17,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:17,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672367697] [2022-12-14 08:55:17,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672367697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:55:17,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:55:17,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:55:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385044385] [2022-12-14 08:55:17,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:55:17,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:55:17,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:55:17,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:55:17,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:55:17,618 INFO L87 Difference]: Start difference. First operand 267 states and 392 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:55:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:17,838 INFO L93 Difference]: Finished difference Result 648 states and 990 transitions. [2022-12-14 08:55:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:55:17,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-12-14 08:55:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:17,842 INFO L225 Difference]: With dead ends: 648 [2022-12-14 08:55:17,843 INFO L226 Difference]: Without dead ends: 407 [2022-12-14 08:55:17,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:55:17,844 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 55 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:17,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 379 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-12-14 08:55:17,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2022-12-14 08:55:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 292 states have (on average 1.5273972602739727) internal successors, (446), 295 states have internal predecessors, (446), 87 states have call successors, (87), 22 states have call predecessors, (87), 20 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-14 08:55:17,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 619 transitions. [2022-12-14 08:55:17,987 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 619 transitions. Word has length 68 [2022-12-14 08:55:17,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:55:17,987 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 619 transitions. [2022-12-14 08:55:17,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 08:55:17,987 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 619 transitions. [2022-12-14 08:55:17,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 08:55:17,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:55:17,989 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:55:17,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:55:17,989 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:55:17,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:55:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash -941652917, now seen corresponding path program 1 times [2022-12-14 08:55:17,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:55:17,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053566058] [2022-12-14 08:55:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:55:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:55:18,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:55:18,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053566058] [2022-12-14 08:55:18,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053566058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:55:18,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316966529] [2022-12-14 08:55:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:55:18,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:18,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:18,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:18,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:55:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:55:18,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:55:18,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:55:18,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:18,317 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 08:55:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316966529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:18,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1910216124] [2022-12-14 08:55:18,321 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 08:55:18,321 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:55:18,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:55:18,322 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:55:18,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:56:05,412 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 08:56:05,733 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-12-14 08:56:06,049 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:56:51,432 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 593 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:56:58,051 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 595 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:57:22,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1910216124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:57:22,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:57:22,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 08:57:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616017656] [2022-12-14 08:57:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:57:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 08:57:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:57:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 08:57:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 08:57:22,450 INFO L87 Difference]: Start difference. First operand 400 states and 619 transitions. Second operand has 25 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-14 08:57:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:57:57,289 INFO L93 Difference]: Finished difference Result 779 states and 1234 transitions. [2022-12-14 08:57:57,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-14 08:57:57,290 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 69 [2022-12-14 08:57:57,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:57:57,292 INFO L225 Difference]: With dead ends: 779 [2022-12-14 08:57:57,292 INFO L226 Difference]: Without dead ends: 510 [2022-12-14 08:57:57,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 104.1s TimeCoverageRelationStatistics Valid=208, Invalid=1352, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 08:57:57,293 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 181 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 2165 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-14 08:57:57,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 2811 Invalid, 2185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 2165 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-14 08:57:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-12-14 08:57:57,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 432. [2022-12-14 08:57:57,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 320 states have (on average 1.521875) internal successors, (487), 325 states have internal predecessors, (487), 90 states have call successors, (90), 23 states have call predecessors, (90), 21 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-12-14 08:57:57,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 666 transitions. [2022-12-14 08:57:57,504 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 666 transitions. Word has length 69 [2022-12-14 08:57:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:57:57,504 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 666 transitions. [2022-12-14 08:57:57,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 8 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2022-12-14 08:57:57,504 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 666 transitions. [2022-12-14 08:57:57,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 08:57:57,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:57:57,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:57:57,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:57:57,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 08:57:57,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:57:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:57:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1736662030, now seen corresponding path program 1 times [2022-12-14 08:57:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:57:57,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830022373] [2022-12-14 08:57:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:57,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:57:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:57:57,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:57:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830022373] [2022-12-14 08:57:57,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830022373] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:57:57,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540107064] [2022-12-14 08:57:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:57:57,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:57:57,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:57:57,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:57:57,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:57:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:57:58,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 08:57:58,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:57:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:57:58,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:57:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 08:57:58,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540107064] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:57:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [104609294] [2022-12-14 08:57:58,094 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 08:57:58,094 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:57:58,095 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:57:58,095 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:57:58,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:00:07,869 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 09:00:08,274 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-12-14 09:00:08,608 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 279 for LOIs [2022-12-14 09:00:08,752 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 09:00:09,080 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 457 for LOIs [2022-12-14 09:00:09,816 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:01:31,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [104609294] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:01:31,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:01:31,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-12-14 09:01:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848462084] [2022-12-14 09:01:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:01:31,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 09:01:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:01:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 09:01:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1012, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 09:01:31,961 INFO L87 Difference]: Start difference. First operand 432 states and 666 transitions. Second operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-12-14 09:01:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:01:50,923 INFO L93 Difference]: Finished difference Result 814 states and 1285 transitions. [2022-12-14 09:01:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 09:01:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 72 [2022-12-14 09:01:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:01:50,926 INFO L225 Difference]: With dead ends: 814 [2022-12-14 09:01:50,926 INFO L226 Difference]: Without dead ends: 545 [2022-12-14 09:01:50,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 91.6s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 09:01:50,927 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 199 mSDsluCounter, 2794 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:01:50,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 2996 Invalid, 3041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-12-14 09:01:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-12-14 09:01:51,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 472. [2022-12-14 09:01:51,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 352 states have (on average 1.5113636363636365) internal successors, (532), 359 states have internal predecessors, (532), 95 states have call successors, (95), 26 states have call predecessors, (95), 24 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 09:01:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 721 transitions. [2022-12-14 09:01:51,203 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 721 transitions. Word has length 72 [2022-12-14 09:01:51,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:01:51,203 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 721 transitions. [2022-12-14 09:01:51,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-12-14 09:01:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 721 transitions. [2022-12-14 09:01:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 09:01:51,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:01:51,205 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:01:51,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:01:51,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:01:51,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:01:51,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:01:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash 741307741, now seen corresponding path program 1 times [2022-12-14 09:01:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:01:51,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157576226] [2022-12-14 09:01:51,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:01:51,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:01:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:01:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:01:51,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:01:51,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157576226] [2022-12-14 09:01:51,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157576226] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:01:51,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42836251] [2022-12-14 09:01:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:01:51,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:01:51,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:01:51,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:01:51,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:01:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:01:51,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:01:51,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:01:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:01:51,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:01:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 09:01:51,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42836251] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:01:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561163199] [2022-12-14 09:01:51,773 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 09:01:51,773 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:01:51,773 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:01:51,773 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:01:51,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:02:40,886 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-12-14 09:02:41,197 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 09:02:41,547 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-12-14 09:02:43,248 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 239 for LOIs [2022-12-14 09:02:43,290 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-12-14 09:02:47,668 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 231 for LOIs [2022-12-14 09:02:47,704 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-12-14 09:02:51,267 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:03:36,803 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 603 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:03:43,627 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 605 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:03:55,307 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 569 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:04:00,683 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 565 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:04:25,700 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 580 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:04:53,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1561163199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:04:53,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:04:53,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [4, 4, 4] total 53 [2022-12-14 09:04:53,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126198649] [2022-12-14 09:04:53,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:04:53,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 09:04:53,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:04:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 09:04:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 09:04:53,885 INFO L87 Difference]: Start difference. First operand 472 states and 721 transitions. Second operand has 48 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 33 states have internal predecessors, (41), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:08,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:08,238 INFO L93 Difference]: Finished difference Result 908 states and 1436 transitions. [2022-12-14 09:06:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-14 09:06:08,239 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 33 states have internal predecessors, (41), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 71 [2022-12-14 09:06:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:08,241 INFO L225 Difference]: With dead ends: 908 [2022-12-14 09:06:08,241 INFO L226 Difference]: Without dead ends: 639 [2022-12-14 09:06:08,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1095 ImplicationChecksByTransitivity, 180.8s TimeCoverageRelationStatistics Valid=482, Invalid=4920, Unknown=0, NotChecked=0, Total=5402 [2022-12-14 09:06:08,243 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 350 mSDsluCounter, 4326 mSDsCounter, 0 mSdLazyCounter, 5539 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 4535 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:08,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 4535 Invalid, 5566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 5539 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2022-12-14 09:06:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-12-14 09:06:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 492. [2022-12-14 09:06:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 372 states have (on average 1.5134408602150538) internal successors, (563), 379 states have internal predecessors, (563), 95 states have call successors, (95), 26 states have call predecessors, (95), 24 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 09:06:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 752 transitions. [2022-12-14 09:06:08,605 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 752 transitions. Word has length 71 [2022-12-14 09:06:08,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:08,606 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 752 transitions. [2022-12-14 09:06:08,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 33 states have internal predecessors, (41), 13 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:06:08,606 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 752 transitions. [2022-12-14 09:06:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 09:06:08,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:08,607 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:06:08,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:06:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:06:08,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash -208371650, now seen corresponding path program 1 times [2022-12-14 09:06:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:08,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566946090] [2022-12-14 09:06:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 09:06:08,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:08,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566946090] [2022-12-14 09:06:08,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566946090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:06:08,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:06:08,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:06:08,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948232110] [2022-12-14 09:06:08,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:06:08,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:06:08,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:06:08,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:06:08,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:06:08,942 INFO L87 Difference]: Start difference. First operand 492 states and 752 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 09:06:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:06:09,407 INFO L93 Difference]: Finished difference Result 581 states and 858 transitions. [2022-12-14 09:06:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:06:09,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2022-12-14 09:06:09,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:06:09,409 INFO L225 Difference]: With dead ends: 581 [2022-12-14 09:06:09,409 INFO L226 Difference]: Without dead ends: 514 [2022-12-14 09:06:09,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:06:09,411 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 119 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:06:09,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 242 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:06:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-12-14 09:06:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512. [2022-12-14 09:06:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 382 states have (on average 1.5) internal successors, (573), 390 states have internal predecessors, (573), 99 states have call successors, (99), 33 states have call predecessors, (99), 30 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2022-12-14 09:06:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 770 transitions. [2022-12-14 09:06:09,797 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 770 transitions. Word has length 74 [2022-12-14 09:06:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:06:09,797 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 770 transitions. [2022-12-14 09:06:09,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 09:06:09,797 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 770 transitions. [2022-12-14 09:06:09,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 09:06:09,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:06:09,799 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 09:06:09,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:06:09,799 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:06:09,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:06:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 518075234, now seen corresponding path program 1 times [2022-12-14 09:06:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:06:09,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019741396] [2022-12-14 09:06:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:06:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 09:06:09,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:06:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019741396] [2022-12-14 09:06:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019741396] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:06:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190087134] [2022-12-14 09:06:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:06:09,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:06:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:06:09,894 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:06:09,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9382694-2bc8-46bb-9c72-464ba854b1cf/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:06:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:06:10,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:06:10,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:06:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-14 09:06:10,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:06:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 09:06:10,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190087134] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:06:10,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1719254446] [2022-12-14 09:06:10,192 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-12-14 09:06:10,192 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:06:10,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:06:10,193 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:06:10,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:06:38,213 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 09:06:38,532 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-12-14 09:06:38,846 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 09:06:41,682 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-12-14 09:06:41,723 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 527 for LOIs