./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW --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 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 --- 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-4e7fbc6 [2022-11-23 16:06:44,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:06:44,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:06:44,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:06:44,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:06:44,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:06:44,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:06:44,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:06:44,668 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:06:44,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:06:44,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:06:44,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:06:44,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:06:44,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:06:44,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:06:44,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:06:44,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:06:44,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:06:44,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:06:44,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:06:44,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:06:44,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:06:44,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:06:44,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:06:44,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:06:44,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:06:44,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:06:44,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:06:44,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:06:44,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:06:44,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:06:44,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:06:44,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:06:44,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:06:44,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:06:44,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:06:44,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:06:44,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:06:44,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:06:44,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:06:44,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:06:44,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 16:06:44,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:06:44,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:06:44,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:06:44,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:06:44,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:06:44,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:06:44,761 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:06:44,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:06:44,762 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:06:44,762 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:06:44,762 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:06:44,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:06:44,766 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:06:44,766 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:06:44,766 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:06:44,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:06:44,767 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:06:44,767 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:06:44,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:06:44,768 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:06:44,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:06:44,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:06:44,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:06:44,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:06:44,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:06:44,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:06:44,770 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:06:44,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:06:44,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:06:44,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:06:44,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:06:44,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:06:44,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:06:44,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:06:44,773 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:06:44,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:06:44,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:06:44,775 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:06:44,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:06:44,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:06:44,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:06:44,776 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_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68503ade3bb1f8128c7da84cd7c3e560bf5cd62b2b0df855f3aa4d33b9063aa0 [2022-11-23 16:06:45,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:06:45,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:06:45,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:06:45,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:06:45,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:06:45,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2022-11-23 16:06:48,187 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:06:48,610 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:06:48,611 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c [2022-11-23 16:06:48,628 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/data/00461ccb2/1e36274690c84e459c70bbc9c1088f72/FLAGe338f7876 [2022-11-23 16:06:48,643 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/data/00461ccb2/1e36274690c84e459c70bbc9c1088f72 [2022-11-23 16:06:48,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:06:48,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:06:48,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:06:48,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:06:48,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:06:48,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:06:48" (1/1) ... [2022-11-23 16:06:48,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8ded99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:48, skipping insertion in model container [2022-11-23 16:06:48,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:06:48" (1/1) ... [2022-11-23 16:06:48,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:06:48,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:06:49,211 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_94941c23-9f03-4e38-ac5c-5712504006b6/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-11-23 16:06:49,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:06:49,486 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:06:49,581 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_94941c23-9f03-4e38-ac5c-5712504006b6/sv-benchmarks/c/product-lines/email_spec1_product15.cil.c[34816,34829] [2022-11-23 16:06:49,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:06:49,673 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:06:49,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49 WrapperNode [2022-11-23 16:06:49,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:06:49,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:06:49,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:06:49,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:06:49,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,834 INFO L138 Inliner]: procedures = 125, calls = 196, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 875 [2022-11-23 16:06:49,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:06:49,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:06:49,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:06:49,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:06:49,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,918 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:06:49,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:06:49,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:06:49,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:06:49,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (1/1) ... [2022-11-23 16:06:49,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:06:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:06:50,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:06:50,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:06:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 16:06:50,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 16:06:50,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 16:06:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 16:06:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 16:06:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 16:06:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 16:06:50,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 16:06:50,056 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 16:06:50,057 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 16:06:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 16:06:50,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 16:06:50,057 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 16:06:50,057 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 16:06:50,058 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 16:06:50,058 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 16:06:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 16:06:50,058 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 16:06:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 16:06:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:06:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 16:06:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 16:06:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 16:06:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 16:06:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 16:06:50,061 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 16:06:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 16:06:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 16:06:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 16:06:50,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 16:06:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 16:06:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 16:06:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 16:06:50,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 16:06:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:06:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 16:06:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 16:06:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:06:50,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:06:50,297 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:06:50,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:06:51,206 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:06:51,776 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:06:51,776 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 16:06:51,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:06:51 BoogieIcfgContainer [2022-11-23 16:06:51,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:06:51,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:06:51,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:06:51,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:06:51,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:06:48" (1/3) ... [2022-11-23 16:06:51,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960093e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:06:51, skipping insertion in model container [2022-11-23 16:06:51,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:06:49" (2/3) ... [2022-11-23 16:06:51,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960093e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:06:51, skipping insertion in model container [2022-11-23 16:06:51,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:06:51" (3/3) ... [2022-11-23 16:06:51,792 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2022-11-23 16:06:51,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:06:51,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 16:06:51,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:06:51,898 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;@2074ee20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:06:51,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 16:06:51,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 94 states have internal predecessors, (124), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 16:06:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 16:06:51,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:51,920 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] [2022-11-23 16:06:51,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:51,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:51,926 INFO L85 PathProgramCache]: Analyzing trace with hash -926621199, now seen corresponding path program 1 times [2022-11-23 16:06:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:51,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603180554] [2022-11-23 16:06:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:06:52,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603180554] [2022-11-23 16:06:52,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603180554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:52,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:06:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252188595] [2022-11-23 16:06:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:52,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 16:06:52,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 16:06:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:06:52,377 INFO L87 Difference]: Start difference. First operand has 151 states, 90 states have (on average 1.3777777777777778) internal successors, (124), 94 states have internal predecessors, (124), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) 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) [2022-11-23 16:06:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:52,554 INFO L93 Difference]: Finished difference Result 219 states and 294 transitions. [2022-11-23 16:06:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 16:06:52,557 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 [2022-11-23 16:06:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:52,578 INFO L225 Difference]: With dead ends: 219 [2022-11-23 16:06:52,578 INFO L226 Difference]: Without dead ends: 148 [2022-11-23 16:06:52,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 16:06:52,588 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:52,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:06:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-23 16:06:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-23 16:06:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 91 states have internal predecessors, (118), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-23 16:06:52,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 201 transitions. [2022-11-23 16:06:52,686 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 201 transitions. Word has length 56 [2022-11-23 16:06:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:52,689 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 201 transitions. [2022-11-23 16:06:52,689 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) [2022-11-23 16:06:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 201 transitions. [2022-11-23 16:06:52,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 16:06:52,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:52,700 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] [2022-11-23 16:06:52,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:06:52,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1910243681, now seen corresponding path program 1 times [2022-11-23 16:06:52,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:52,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054606699] [2022-11-23 16:06:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:52,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:52,948 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:06:52,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:52,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054606699] [2022-11-23 16:06:52,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054606699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:52,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:52,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:06:52,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58828183] [2022-11-23 16:06:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:52,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:06:52,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:06:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:06:52,952 INFO L87 Difference]: Start difference. First operand 148 states and 201 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) [2022-11-23 16:06:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:53,096 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2022-11-23 16:06:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:06:53,097 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 [2022-11-23 16:06:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:53,099 INFO L225 Difference]: With dead ends: 215 [2022-11-23 16:06:53,099 INFO L226 Difference]: Without dead ends: 150 [2022-11-23 16:06:53,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:06:53,102 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:53,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:06:53,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-23 16:06:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-23 16:06:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 42 states have call successors, (42), 17 states have call predecessors, (42), 17 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-23 16:06:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 203 transitions. [2022-11-23 16:06:53,139 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 203 transitions. Word has length 57 [2022-11-23 16:06:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:53,140 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 203 transitions. [2022-11-23 16:06:53,140 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) [2022-11-23 16:06:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 203 transitions. [2022-11-23 16:06:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 16:06:53,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:53,146 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] [2022-11-23 16:06:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:06:53,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash -62910922, now seen corresponding path program 1 times [2022-11-23 16:06:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:53,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056251341] [2022-11-23 16:06:53,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:53,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:06:53,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056251341] [2022-11-23 16:06:53,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056251341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:06:53,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:06:53,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:06:53,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301910811] [2022-11-23 16:06:53,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:06:53,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:06:53,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:06:53,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:06:53,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:06:53,269 INFO L87 Difference]: Start difference. First operand 150 states and 203 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) [2022-11-23 16:06:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:06:53,418 INFO L93 Difference]: Finished difference Result 330 states and 465 transitions. [2022-11-23 16:06:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:06:53,419 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 [2022-11-23 16:06:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:06:53,425 INFO L225 Difference]: With dead ends: 330 [2022-11-23 16:06:53,426 INFO L226 Difference]: Without dead ends: 198 [2022-11-23 16:06:53,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:06:53,436 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 57 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:06:53,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:06:53,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-23 16:06:53,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2022-11-23 16:06:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 122 states have (on average 1.4180327868852458) internal successors, (173), 125 states have internal predecessors, (173), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-23 16:06:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 278 transitions. [2022-11-23 16:06:53,469 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 278 transitions. Word has length 62 [2022-11-23 16:06:53,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:06:53,471 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 278 transitions. [2022-11-23 16:06:53,471 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) [2022-11-23 16:06:53,471 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 278 transitions. [2022-11-23 16:06:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 16:06:53,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:06:53,480 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] [2022-11-23 16:06:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:06:53,480 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:06:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:06:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1177494779, now seen corresponding path program 1 times [2022-11-23 16:06:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:06:53,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490770366] [2022-11-23 16:06:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:06:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:53,794 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:06:53,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:06:53,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490770366] [2022-11-23 16:06:53,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490770366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:06:53,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539802980] [2022-11-23 16:06:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:06:53,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:06:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:06:53,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:06:53,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:06:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:06:54,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:06:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:06:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:06:54,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:06:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:06:54,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539802980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:06:54,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [234362175] [2022-11-23 16:06:54,338 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-23 16:06:54,339 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:06:54,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:06:54,349 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:06:54,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:07:39,042 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:07:39,380 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:07:39,808 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 261 for LOIs [2022-11-23 16:07:41,768 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-23 16:07:41,811 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2022-11-23 16:07:46,391 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 233 for LOIs [2022-11-23 16:07:46,438 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-23 16:07:50,028 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:08:20,018 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:25,205 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 480 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:33,994 WARN L233 SmtUtils]: Spent 7.59s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:40,121 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:50,105 WARN L233 SmtUtils]: Spent 8.51s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:03,979 WARN L233 SmtUtils]: Spent 13.53s on a formula simplification. DAG size of input: 587 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:14,687 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 559 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:22,297 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 563 DAG size of output: 367 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:29,586 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 559 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:37,145 WARN L233 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 565 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:55,058 WARN L233 SmtUtils]: Spent 13.89s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:33,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [234362175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:33,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:10:33,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 45 [2022-11-23 16:10:33,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441005713] [2022-11-23 16:10:33,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:33,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 16:10:33,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 16:10:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1866, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 16:10:33,829 INFO L87 Difference]: Start difference. First operand 193 states and 278 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) [2022-11-23 16:10:42,202 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 509 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:49,141 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 449 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:55,184 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 457 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:01,193 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 453 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:07,245 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 459 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:47,490 INFO L93 Difference]: Finished difference Result 547 states and 866 transitions. [2022-11-23 16:11:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-23 16:11:47,491 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 [2022-11-23 16:11:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:47,495 INFO L225 Difference]: With dead ends: 547 [2022-11-23 16:11:47,495 INFO L226 Difference]: Without dead ends: 372 [2022-11-23 16:11:47,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 145 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 211.6s TimeCoverageRelationStatistics Valid=183, Invalid=2787, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 16:11:47,501 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 282 mSDsluCounter, 3957 mSDsCounter, 0 mSdLazyCounter, 5012 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:47,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 4190 Invalid, 5044 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 5012 Invalid, 0 Unknown, 0 Unchecked, 25.1s Time] [2022-11-23 16:11:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-23 16:11:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 284. [2022-11-23 16:11:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 203 states have (on average 1.4729064039408868) internal successors, (299), 206 states have internal predecessors, (299), 59 states have call successors, (59), 23 states have call predecessors, (59), 21 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-23 16:11:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 416 transitions. [2022-11-23 16:11:47,788 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 416 transitions. Word has length 63 [2022-11-23 16:11:47,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:47,790 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 416 transitions. [2022-11-23 16:11:47,790 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) [2022-11-23 16:11:47,790 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 416 transitions. [2022-11-23 16:11:47,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 16:11:47,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:47,798 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:47,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:11:48,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:48,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:48,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1162291949, now seen corresponding path program 1 times [2022-11-23 16:11:48,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:48,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821819532] [2022-11-23 16:11:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:48,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:11:48,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:48,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821819532] [2022-11-23 16:11:48,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821819532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:48,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:48,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:11:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613207382] [2022-11-23 16:11:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:48,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:11:48,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:11:48,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:11:48,114 INFO L87 Difference]: Start difference. First operand 284 states and 416 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) [2022-11-23 16:11:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:48,542 INFO L93 Difference]: Finished difference Result 635 states and 957 transitions. [2022-11-23 16:11:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:11:48,543 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 [2022-11-23 16:11:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:48,547 INFO L225 Difference]: With dead ends: 635 [2022-11-23 16:11:48,547 INFO L226 Difference]: Without dead ends: 398 [2022-11-23 16:11:48,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:11:48,550 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 55 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:48,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 367 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:11:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-11-23 16:11:48,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 391. [2022-11-23 16:11:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 285 states have (on average 1.4982456140350877) internal successors, (427), 288 states have internal predecessors, (427), 84 states have call successors, (84), 23 states have call predecessors, (84), 21 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-23 16:11:48,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 594 transitions. [2022-11-23 16:11:48,824 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 594 transitions. Word has length 68 [2022-11-23 16:11:48,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:48,825 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 594 transitions. [2022-11-23 16:11:48,825 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) [2022-11-23 16:11:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 594 transitions. [2022-11-23 16:11:48,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 16:11:48,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:48,829 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] [2022-11-23 16:11:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:11:48,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:11:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash 285726159, now seen corresponding path program 1 times [2022-11-23 16:11:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:48,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219720585] [2022-11-23 16:11:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:11:48,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:48,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219720585] [2022-11-23 16:11:48,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219720585] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:11:48,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638302657] [2022-11-23 16:11:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:48,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:11:48,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:11:48,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:11:49,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:11:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:49,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:11:49,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:11:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:11:49,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:11:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:11:49,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638302657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:11:49,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [366696416] [2022-11-23 16:11:49,471 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-23 16:11:49,471 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:11:49,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:11:49,472 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:11:49,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:12:28,277 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-23 16:12:28,627 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-23 16:12:28,968 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 254 for LOIs [2022-11-23 16:12:30,681 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-23 16:12:30,726 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 254 for LOIs [2022-11-23 16:12:35,454 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 226 for LOIs [2022-11-23 16:12:35,497 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 472 for LOIs [2022-11-23 16:12:37,545 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:13:09,703 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:15,226 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 480 DAG size of output: 291 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:23,929 WARN L233 SmtUtils]: Spent 7.50s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:30,039 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:13:39,714 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:01,900 WARN L233 SmtUtils]: Spent 21.80s on a formula simplification. DAG size of input: 588 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:22,720 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 472 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:14:55,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [366696416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:14:55,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:14:55,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-23 16:14:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060521572] [2022-11-23 16:14:55,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:14:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-23 16:14:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:14:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-23 16:14:55,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 16:14:55,972 INFO L87 Difference]: Start difference. First operand 391 states and 594 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 16:15:18,383 WARN L233 SmtUtils]: Spent 19.88s on a formula simplification. DAG size of input: 483 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:23,982 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 487 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:29,744 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 493 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:35,470 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 489 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:41,291 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 495 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:47,228 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 491 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:53,182 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 497 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:15:59,072 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 499 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:10,751 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 584 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:22,143 WARN L233 SmtUtils]: Spent 10.23s on a formula simplification. DAG size of input: 586 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:16:44,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:16:44,783 INFO L93 Difference]: Finished difference Result 784 states and 1215 transitions. [2022-11-23 16:16:44,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-23 16:16:44,784 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-11-23 16:16:44,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:16:44,788 INFO L225 Difference]: With dead ends: 784 [2022-11-23 16:16:44,788 INFO L226 Difference]: Without dead ends: 519 [2022-11-23 16:16:44,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 225.4s TimeCoverageRelationStatistics Valid=254, Invalid=3528, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 16:16:44,791 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 255 mSDsluCounter, 4007 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 4217 SdHoareTripleChecker+Invalid, 4957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:16:44,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 4217 Invalid, 4957 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [33 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2022-11-23 16:16:44,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-23 16:16:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 414. [2022-11-23 16:16:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 305 states have (on average 1.498360655737705) internal successors, (457), 309 states have internal predecessors, (457), 86 states have call successors, (86), 24 states have call predecessors, (86), 22 states have return successors, (85), 82 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-23 16:16:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 628 transitions. [2022-11-23 16:16:45,088 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 628 transitions. Word has length 69 [2022-11-23 16:16:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:16:45,089 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 628 transitions. [2022-11-23 16:16:45,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 16:16:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 628 transitions. [2022-11-23 16:16:45,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 16:16:45,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:16:45,091 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] [2022-11-23 16:16:45,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:16:45,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 16:16:45,292 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:16:45,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:16:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1175061797, now seen corresponding path program 1 times [2022-11-23 16:16:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:16:45,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424646912] [2022-11-23 16:16:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:16:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:16:45,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:16:45,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424646912] [2022-11-23 16:16:45,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424646912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:16:45,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873305391] [2022-11-23 16:16:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:16:45,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:16:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:16:45,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:16:45,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:16:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:16:45,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:16:45,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:16:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:16:45,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:16:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 16:16:45,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873305391] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:16:45,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [626939488] [2022-11-23 16:16:45,893 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-23 16:16:45,894 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:16:45,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:16:45,895 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:16:45,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:17:20,797 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 16:17:21,108 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-11-23 16:17:21,184 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-11-23 16:17:21,248 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:17:21,556 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 235 for LOIs [2022-11-23 16:17:21,620 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:17:39,075 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:17:52,792 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 468 DAG size of output: 296 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:05,862 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 490 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:11,617 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 502 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:20,891 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 512 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:37,765 WARN L233 SmtUtils]: Spent 16.55s on a formula simplification. DAG size of input: 623 DAG size of output: 483 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:18:52,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [626939488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:18:52,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:18:52,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-23 16:18:52,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808798770] [2022-11-23 16:18:52,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:18:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 16:18:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:18:52,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 16:18:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 16:18:52,453 INFO L87 Difference]: Start difference. First operand 414 states and 628 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) [2022-11-23 16:19:03,630 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 541 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:09,225 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 485 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:14,906 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 489 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:20,625 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 491 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:36,355 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 560 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:19:47,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:19:47,325 INFO L93 Difference]: Finished difference Result 778 states and 1215 transitions. [2022-11-23 16:19:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 16:19:47,332 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 [2022-11-23 16:19:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:19:47,338 INFO L225 Difference]: With dead ends: 778 [2022-11-23 16:19:47,338 INFO L226 Difference]: Without dead ends: 513 [2022-11-23 16:19:47,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 129.9s TimeCoverageRelationStatistics Valid=170, Invalid=1552, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 16:19:47,345 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 175 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 3424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:19:47,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 3099 Invalid, 3424 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-11-23 16:19:47,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-23 16:19:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 451. [2022-11-23 16:19:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 335 states have (on average 1.48955223880597) internal successors, (499), 340 states have internal predecessors, (499), 90 states have call successors, (90), 27 states have call predecessors, (90), 25 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-23 16:19:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 678 transitions. [2022-11-23 16:19:47,699 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 678 transitions. Word has length 72 [2022-11-23 16:19:47,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:19:47,699 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 678 transitions. [2022-11-23 16:19:47,700 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) [2022-11-23 16:19:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 678 transitions. [2022-11-23 16:19:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 16:19:47,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:19:47,702 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] [2022-11-23 16:19:47,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:19:47,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:19:47,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:19:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:19:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash -893406447, now seen corresponding path program 1 times [2022-11-23 16:19:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:19:47,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774707570] [2022-11-23 16:19:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:19:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:19:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:19:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:19:48,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:19:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774707570] [2022-11-23 16:19:48,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774707570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:19:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163012808] [2022-11-23 16:19:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:19:48,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:19:48,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:19:48,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:19:48,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_94941c23-9f03-4e38-ac5c-5712504006b6/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:19:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:19:48,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:19:48,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:19:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:19:48,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:19:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 16:19:48,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163012808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:19:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [516140151] [2022-11-23 16:19:48,524 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-23 16:19:48,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:19:48,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:19:48,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:19:48,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs