./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/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_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/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_52b59157-a69d-4eaa-bfa3-1287d081c3ba/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 f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 --- 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 15:10:16,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:10:16,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:10:16,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:10:16,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:10:16,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:10:16,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:10:16,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:10:16,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:10:16,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:10:16,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:10:16,677 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:10:16,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:10:16,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:10:16,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:10:16,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:10:16,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:10:16,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:10:16,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:10:16,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:10:16,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:10:16,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:10:16,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:10:16,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:10:16,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:10:16,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:10:16,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:10:16,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:10:16,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:10:16,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:10:16,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:10:16,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:10:16,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:10:16,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:10:16,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:10:16,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:10:16,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:10:16,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:10:16,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:10:16,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:10:16,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:10:16,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:10:16,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:10:16,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:10:16,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:10:16,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:10:16,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:10:16,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:10:16,778 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:10:16,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:10:16,779 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:10:16,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:10:16,779 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:10:16,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:10:16,780 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:10:16,780 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:10:16,780 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:10:16,780 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:10:16,781 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:10:16,781 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:10:16,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:10:16,782 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:10:16,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:10:16,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:10:16,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:10:16,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:10:16,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:10:16,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:10:16,783 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:10:16,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:10:16,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:10:16,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:10:16,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:10:16,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:10:16,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:16,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:10:16,785 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:10:16,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:10:16,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:10:16,785 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:10:16,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:10:16,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:10:16,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:10:16,786 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_52b59157-a69d-4eaa-bfa3-1287d081c3ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a760a25f6e6d96f820367881f3fbbc32febc8ce03434205938078db6a21524 [2022-11-23 15:10:17,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:10:17,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:10:17,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:10:17,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:10:17,122 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:10:17,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2022-11-23 15:10:20,287 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:10:20,677 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:10:20,684 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c [2022-11-23 15:10:20,707 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/data/3048f10b1/0532e09a695c4223ab9c4929d8f55568/FLAGd382e3aec [2022-11-23 15:10:20,731 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/data/3048f10b1/0532e09a695c4223ab9c4929d8f55568 [2022-11-23 15:10:20,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:10:20,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:10:20,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:20,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:10:20,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:10:20,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:20" (1/1) ... [2022-11-23 15:10:20,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e3adcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:20, skipping insertion in model container [2022-11-23 15:10:20,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:10:20" (1/1) ... [2022-11-23 15:10:20,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:10:20,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:10:21,428 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_52b59157-a69d-4eaa-bfa3-1287d081c3ba/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2022-11-23 15:10:21,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:21,458 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:10:21,661 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_52b59157-a69d-4eaa-bfa3-1287d081c3ba/sv-benchmarks/c/product-lines/email_spec27_product24.cil.c[62587,62600] [2022-11-23 15:10:21,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:10:21,710 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:10:21,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21 WrapperNode [2022-11-23 15:10:21,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:10:21,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:21,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:10:21,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:10:21,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,850 INFO L138 Inliner]: procedures = 130, calls = 210, calls flagged for inlining = 62, calls inlined = 57, statements flattened = 1001 [2022-11-23 15:10:21,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:10:21,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:10:21,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:10:21,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:10:21,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:10:21,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:10:21,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:10:21,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:10:21,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (1/1) ... [2022-11-23 15:10:21,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:10:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:22,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:10:22,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:10:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:10:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:10:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:10:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:10:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 15:10:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 15:10:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:10:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:10:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 15:10:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 15:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:10:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 15:10:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 15:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 15:10:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 15:10:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:10:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:10:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:10:22,082 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 15:10:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 15:10:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:10:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:10:22,083 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:10:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:10:22,084 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:10:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:10:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-23 15:10:22,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-23 15:10:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 15:10:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 15:10:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:10:22,087 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:10:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:10:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:10:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 15:10:22,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 15:10:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:10:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:10:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:10:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:10:22,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:10:22,348 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:10:22,350 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:10:23,518 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:10:24,055 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:10:24,055 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:10:24,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:24 BoogieIcfgContainer [2022-11-23 15:10:24,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:10:24,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:10:24,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:10:24,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:10:24,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:10:20" (1/3) ... [2022-11-23 15:10:24,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72948dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:24, skipping insertion in model container [2022-11-23 15:10:24,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:10:21" (2/3) ... [2022-11-23 15:10:24,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72948dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:10:24, skipping insertion in model container [2022-11-23 15:10:24,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:10:24" (3/3) ... [2022-11-23 15:10:24,080 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2022-11-23 15:10:24,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:10:24,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:10:24,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:10:24,196 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;@2c42ad11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:10:24,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:10:24,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 105 states have internal predecessors, (137), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-23 15:10:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 15:10:24,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:24,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:24,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:24,237 INFO L85 PathProgramCache]: Analyzing trace with hash -377720430, now seen corresponding path program 1 times [2022-11-23 15:10:24,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:24,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896111699] [2022-11-23 15:10:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:24,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:24,627 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 15:10:24,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:24,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896111699] [2022-11-23 15:10:24,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896111699] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:24,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:24,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:10:24,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972600350] [2022-11-23 15:10:24,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:24,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:10:24,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:10:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:10:24,695 INFO L87 Difference]: Start difference. First operand has 174 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 105 states have internal predecessors, (137), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:10:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:24,895 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2022-11-23 15:10:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:10:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 68 [2022-11-23 15:10:24,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:24,912 INFO L225 Difference]: With dead ends: 265 [2022-11-23 15:10:24,913 INFO L226 Difference]: Without dead ends: 171 [2022-11-23 15:10:24,921 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 15:10:24,926 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:24,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-23 15:10:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-23 15:10:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 101 states have (on average 1.297029702970297) internal successors, (131), 102 states have internal predecessors, (131), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-23 15:10:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-11-23 15:10:25,014 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 68 [2022-11-23 15:10:25,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:25,015 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-11-23 15:10:25,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:10:25,016 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-11-23 15:10:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 15:10:25,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:25,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:25,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:10:25,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:25,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:25,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1295193005, now seen corresponding path program 1 times [2022-11-23 15:10:25,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:25,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083892663] [2022-11-23 15:10:25,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:25,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:25,362 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 15:10:25,362 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:25,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083892663] [2022-11-23 15:10:25,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083892663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:25,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:25,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:10:25,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100353491] [2022-11-23 15:10:25,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:10:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:10:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:25,367 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:10:25,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:25,552 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2022-11-23 15:10:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:10:25,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-11-23 15:10:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:25,559 INFO L225 Difference]: With dead ends: 261 [2022-11-23 15:10:25,560 INFO L226 Difference]: Without dead ends: 173 [2022-11-23 15:10:25,567 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 15:10:25,570 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:25,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 393 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-23 15:10:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-23 15:10:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 104 states have internal predecessors, (133), 50 states have call successors, (50), 19 states have call predecessors, (50), 19 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-23 15:10:25,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 232 transitions. [2022-11-23 15:10:25,608 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 232 transitions. Word has length 69 [2022-11-23 15:10:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:25,608 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 232 transitions. [2022-11-23 15:10:25,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:10:25,609 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 232 transitions. [2022-11-23 15:10:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 15:10:25,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:25,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:25,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:10:25,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -902352069, now seen corresponding path program 1 times [2022-11-23 15:10:25,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140694331] [2022-11-23 15:10:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:25,809 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 15:10:25,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:25,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140694331] [2022-11-23 15:10:25,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140694331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:10:25,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:10:25,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:10:25,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410213779] [2022-11-23 15:10:25,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:10:25,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:10:25,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:10:25,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:10:25,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:10:25,815 INFO L87 Difference]: Start difference. First operand 173 states and 232 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:10:25,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:10:25,973 INFO L93 Difference]: Finished difference Result 376 states and 523 transitions. [2022-11-23 15:10:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:10:25,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-23 15:10:25,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:10:25,981 INFO L225 Difference]: With dead ends: 376 [2022-11-23 15:10:25,982 INFO L226 Difference]: Without dead ends: 221 [2022-11-23 15:10:25,985 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 15:10:25,990 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 57 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:10:25,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 404 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:10:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-23 15:10:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 216. [2022-11-23 15:10:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 135 states have (on average 1.3777777777777778) internal successors, (186), 136 states have internal predecessors, (186), 61 states have call successors, (61), 19 states have call predecessors, (61), 19 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-23 15:10:26,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 307 transitions. [2022-11-23 15:10:26,069 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 307 transitions. Word has length 74 [2022-11-23 15:10:26,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:10:26,069 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 307 transitions. [2022-11-23 15:10:26,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:10:26,070 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 307 transitions. [2022-11-23 15:10:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 15:10:26,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:10:26,073 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:10:26,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:10:26,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:10:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:10:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash 55977405, now seen corresponding path program 1 times [2022-11-23 15:10:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:10:26,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733476545] [2022-11-23 15:10:26,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:26,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:10:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:26,301 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 15:10:26,301 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:10:26,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733476545] [2022-11-23 15:10:26,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733476545] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:10:26,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414741093] [2022-11-23 15:10:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:10:26,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:10:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:10:26,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:10:26,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:10:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:10:26,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:10:26,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:10:26,791 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 15:10:26,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:10:26,878 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 15:10:26,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414741093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:10:26,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1635698190] [2022-11-23 15:10:26,905 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-23 15:10:26,905 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:10:26,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:10:26,916 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:10:26,917 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:11:05,290 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:11:05,616 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:11:05,942 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-23 15:11:07,977 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 15:11:08,036 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-23 15:11:19,939 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-23 15:11:19,983 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-23 15:11:20,026 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-23 15:11:20,784 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:11:33,581 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:11:38,906 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:03,187 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 486 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:14,560 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 508 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:32,648 WARN L233 SmtUtils]: Spent 17.77s on a formula simplification. DAG size of input: 583 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:43,813 WARN L233 SmtUtils]: Spent 10.77s on a formula simplification. DAG size of input: 591 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:12:54,096 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 562 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:32,993 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 567 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:13:45,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1635698190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:13:45,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:13:45,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-23 15:13:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111329132] [2022-11-23 15:13:45,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:13:45,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 15:13:45,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:13:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 15:13:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 15:13:45,649 INFO L87 Difference]: Start difference. First operand 216 states and 307 transitions. Second operand has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-23 15:13:56,512 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 518 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:05,619 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 408 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:11,594 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 425 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:25,692 WARN L233 SmtUtils]: Spent 9.18s on a formula simplification. DAG size of input: 528 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:14:36,721 WARN L233 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 568 DAG size of output: 415 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:15:01,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:15:01,619 INFO L93 Difference]: Finished difference Result 569 states and 858 transitions. [2022-11-23 15:15:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-23 15:15:01,619 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 75 [2022-11-23 15:15:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:15:01,623 INFO L225 Difference]: With dead ends: 569 [2022-11-23 15:15:01,624 INFO L226 Difference]: Without dead ends: 371 [2022-11-23 15:15:01,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 197.1s TimeCoverageRelationStatistics Valid=194, Invalid=2886, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 15:15:01,626 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 320 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 5562 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 4963 SdHoareTripleChecker+Invalid, 5596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 5562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:15:01,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 4963 Invalid, 5596 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [34 Valid, 5562 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2022-11-23 15:15:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-23 15:15:01,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 308. [2022-11-23 15:15:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 208 states have (on average 1.3798076923076923) internal successors, (287), 210 states have internal predecessors, (287), 74 states have call successors, (74), 26 states have call predecessors, (74), 25 states have return successors, (74), 71 states have call predecessors, (74), 73 states have call successors, (74) [2022-11-23 15:15:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 435 transitions. [2022-11-23 15:15:01,844 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 435 transitions. Word has length 75 [2022-11-23 15:15:01,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:15:01,845 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 435 transitions. [2022-11-23 15:15:01,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 26 states have internal predecessors, (39), 14 states have call successors, (16), 9 states have call predecessors, (16), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-23 15:15:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 435 transitions. [2022-11-23 15:15:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 15:15:01,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:15:01,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:15:01,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:15:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:15:02,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:15:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:15:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1917925688, now seen corresponding path program 1 times [2022-11-23 15:15:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:15:02,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32655917] [2022-11-23 15:15:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:15:02,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:02,211 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 15:15:02,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:15:02,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32655917] [2022-11-23 15:15:02,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32655917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:15:02,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163107101] [2022-11-23 15:15:02,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:15:02,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:15:02,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:15:02,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:15:02,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:15:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:15:02,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:15:02,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:15:02,557 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 15:15:02,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:15:02,617 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 15:15:02,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163107101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:15:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [637351899] [2022-11-23 15:15:02,622 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 15:15:02,622 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:15:02,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:15:02,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:15:02,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:15:47,114 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:15:47,416 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-23 15:15:49,161 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 15:15:49,209 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 15:15:49,519 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-23 15:16:34,012 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 435 for LOIs [2022-11-23 15:16:34,265 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-23 15:16:34,310 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-11-23 15:16:35,070 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 251 for LOIs [2022-11-23 15:16:35,112 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 435 for LOIs [2022-11-23 15:16:35,367 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:16:48,308 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:16:53,635 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:18,651 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 486 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:30,154 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 508 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:45,309 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 559 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:17:53,012 WARN L233 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 565 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:38,387 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification. DAG size of input: 567 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:18:46,090 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 583 DAG size of output: 410 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:02,669 WARN L233 SmtUtils]: Spent 8.37s on a formula simplification. DAG size of input: 603 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:10,006 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 603 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:15,720 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 435 DAG size of output: 317 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:21,697 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 453 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:19:50,296 WARN L233 SmtUtils]: Spent 13.92s on a formula simplification. DAG size of input: 668 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:05,101 WARN L233 SmtUtils]: Spent 13.85s on a formula simplification. DAG size of input: 668 DAG size of output: 559 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:20:05,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [637351899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:20:05,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:20:05,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-23 15:20:05,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262161456] [2022-11-23 15:20:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:20:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-23 15:20:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:20:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-23 15:20:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3124, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 15:20:05,110 INFO L87 Difference]: Start difference. First operand 308 states and 435 transitions. Second operand has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-23 15:21:04,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:21:04,281 INFO L93 Difference]: Finished difference Result 563 states and 812 transitions. [2022-11-23 15:21:04,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-23 15:21:04,281 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 80 [2022-11-23 15:21:04,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:21:04,286 INFO L225 Difference]: With dead ends: 563 [2022-11-23 15:21:04,286 INFO L226 Difference]: Without dead ends: 471 [2022-11-23 15:21:04,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 243.3s TimeCoverageRelationStatistics Valid=247, Invalid=4043, Unknown=0, NotChecked=0, Total=4290 [2022-11-23 15:21:04,289 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 342 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 5644 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 5644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:21:04,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 4412 Invalid, 5676 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [32 Valid, 5644 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time] [2022-11-23 15:21:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-23 15:21:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 335. [2022-11-23 15:21:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 232 states have (on average 1.4267241379310345) internal successors, (331), 234 states have internal predecessors, (331), 75 states have call successors, (75), 28 states have call predecessors, (75), 27 states have return successors, (75), 72 states have call predecessors, (75), 74 states have call successors, (75) [2022-11-23 15:21:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 481 transitions. [2022-11-23 15:21:04,679 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 481 transitions. Word has length 80 [2022-11-23 15:21:04,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:21:04,680 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 481 transitions. [2022-11-23 15:21:04,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 35 states have (on average 1.2) internal successors, (42), 32 states have internal predecessors, (42), 16 states have call successors, (17), 11 states have call predecessors, (17), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-23 15:21:04,680 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 481 transitions. [2022-11-23 15:21:04,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 15:21:04,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:21:04,682 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:21:04,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:21:04,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:04,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:21:04,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:21:04,888 INFO L85 PathProgramCache]: Analyzing trace with hash -346804167, now seen corresponding path program 1 times [2022-11-23 15:21:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:21:04,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057985495] [2022-11-23 15:21:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:21:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:05,114 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 15:21:05,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:21:05,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057985495] [2022-11-23 15:21:05,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057985495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:21:05,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307516640] [2022-11-23 15:21:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:21:05,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:21:05,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:21:05,117 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:21:05,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52b59157-a69d-4eaa-bfa3-1287d081c3ba/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:21:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:21:05,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:21:05,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:21:05,491 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 15:21:05,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:21:05,574 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 15:21:05,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307516640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:21:05,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1470713547] [2022-11-23 15:21:05,578 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-23 15:21:05,578 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:21:05,579 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:21:05,579 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:21:05,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:21:48,999 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 15:21:49,306 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-11-23 15:21:49,607 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-23 15:21:51,335 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-23 15:21:51,378 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-11-23 15:22:03,546 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 247 for LOIs [2022-11-23 15:22:03,581 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 247 for LOIs [2022-11-23 15:22:03,624 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 451 for LOIs [2022-11-23 15:22:04,412 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:22:18,406 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:23,903 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:22:52,165 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 486 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:04,269 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 508 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:16,232 WARN L233 SmtUtils]: Spent 11.59s on a formula simplification. DAG size of input: 584 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:29,050 WARN L233 SmtUtils]: Spent 12.48s on a formula simplification. DAG size of input: 585 DAG size of output: 335 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:23:52,864 WARN L233 SmtUtils]: Spent 23.40s on a formula simplification. DAG size of input: 584 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)