./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product18.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_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/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_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/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_ff4805c4-a451-4c57-b634-a4cd38175371/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 e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf --- 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 14:44:11,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:44:11,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:44:11,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:44:11,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:44:11,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:44:11,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:44:11,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:44:11,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:44:11,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:44:11,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:44:11,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:44:11,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:44:11,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:44:11,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:44:11,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:44:11,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:44:11,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:44:11,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:44:11,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:44:11,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:44:11,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:44:11,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:44:11,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:44:11,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:44:11,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:44:11,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:44:11,761 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:44:11,761 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:44:11,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:44:11,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:44:11,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:44:11,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:44:11,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:44:11,767 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:44:11,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:44:11,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:44:11,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:44:11,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:44:11,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:44:11,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:44:11,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:44:11,794 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:44:11,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:44:11,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:44:11,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:44:11,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:44:11,796 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:44:11,796 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:44:11,797 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:44:11,797 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:44:11,797 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:44:11,798 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:44:11,798 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:44:11,798 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:44:11,799 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:44:11,799 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:44:11,799 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:44:11,800 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:44:11,800 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:44:11,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:44:11,801 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:44:11,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:44:11,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:44:11,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:44:11,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:44:11,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:44:11,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:44:11,803 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:44:11,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:44:11,804 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:44:11,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:44:11,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:44:11,805 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:44:11,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:11,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:44:11,806 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:44:11,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:44:11,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:44:11,807 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:44:11,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:44:11,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:44:11,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:44:11,808 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_ff4805c4-a451-4c57-b634-a4cd38175371/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1a1a15d818854b6fd39e860ed8f86805463715275e4ae9feedab248e5877daf [2022-11-23 14:44:12,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:44:12,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:44:12,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:44:12,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:44:12,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:44:12,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-11-23 14:44:15,364 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:44:15,760 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:44:15,761 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c [2022-11-23 14:44:15,791 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/data/9059868df/d35179a60e4241ae8488d8c748092ed7/FLAG6097f0f43 [2022-11-23 14:44:15,814 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/data/9059868df/d35179a60e4241ae8488d8c748092ed7 [2022-11-23 14:44:15,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:44:15,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:44:15,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:15,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:44:15,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:44:15,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23beb89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15, skipping insertion in model container [2022-11-23 14:44:15,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:44:15,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:44:16,727 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_ff4805c4-a451-4c57-b634-a4cd38175371/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-11-23 14:44:16,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:16,744 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:44:16,871 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_ff4805c4-a451-4c57-b634-a4cd38175371/sv-benchmarks/c/product-lines/email_spec27_product18.cil.c[62382,62395] [2022-11-23 14:44:16,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:16,909 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:44:16,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16 WrapperNode [2022-11-23 14:44:16,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:16,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:16,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:44:16,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:44:16,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:16,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,040 INFO L138 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 57, calls inlined = 49, statements flattened = 874 [2022-11-23 14:44:17,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:17,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:44:17,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:44:17,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:44:17,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:44:17,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:44:17,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:44:17,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:44:17,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (1/1) ... [2022-11-23 14:44:17,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:17,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:17,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:44:17,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:44:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 14:44:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 14:44:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 14:44:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 14:44:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 14:44:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 14:44:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 14:44:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 14:44:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 14:44:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 14:44:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 14:44:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 14:44:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 14:44:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 14:44:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 14:44:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 14:44:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 14:44:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:44:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 14:44:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 14:44:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 14:44:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 14:44:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 14:44:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 14:44:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 14:44:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 14:44:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-23 14:44:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-23 14:44:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 14:44:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 14:44:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 14:44:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 14:44:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 14:44:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 14:44:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 14:44:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 14:44:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:44:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 14:44:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 14:44:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:44:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:44:17,507 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:44:17,509 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:44:18,459 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:44:18,985 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:44:18,985 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:44:18,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:18 BoogieIcfgContainer [2022-11-23 14:44:18,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:44:18,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:44:18,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:44:18,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:44:18,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:15" (1/3) ... [2022-11-23 14:44:18,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8962ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:18, skipping insertion in model container [2022-11-23 14:44:18,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:16" (2/3) ... [2022-11-23 14:44:19,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8962ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:18, skipping insertion in model container [2022-11-23 14:44:19,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:18" (3/3) ... [2022-11-23 14:44:19,002 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.c [2022-11-23 14:44:19,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:44:19,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:44:19,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:44:19,109 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;@d2c6fef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:44:19,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:44:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-23 14:44:19,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 14:44:19,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:19,134 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 14:44:19,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash 228193760, now seen corresponding path program 1 times [2022-11-23 14:44:19,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:19,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243495124] [2022-11-23 14:44:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:19,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:19,637 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 14:44:19,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:19,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243495124] [2022-11-23 14:44:19,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243495124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:19,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:19,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:44:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879346649] [2022-11-23 14:44:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:19,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:44:19,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:44:19,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:44:19,689 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.358695652173913) internal successors, (125), 94 states have internal predecessors, (125), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) 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 14:44:19,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:19,853 INFO L93 Difference]: Finished difference Result 223 states and 292 transitions. [2022-11-23 14:44:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:44:19,856 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 14:44:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:19,871 INFO L225 Difference]: With dead ends: 223 [2022-11-23 14:44:19,872 INFO L226 Difference]: Without dead ends: 150 [2022-11-23 14:44:19,876 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 14:44:19,882 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:19,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 176 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:44:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-23 14:44:19,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-23 14:44:19,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 91 states have internal predecessors, (119), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-23 14:44:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 200 transitions. [2022-11-23 14:44:19,971 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 200 transitions. Word has length 68 [2022-11-23 14:44:19,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:19,974 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 200 transitions. [2022-11-23 14:44:19,975 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 14:44:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 200 transitions. [2022-11-23 14:44:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:44:19,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:19,989 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 14:44:19,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:44:19,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:19,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash 250701991, now seen corresponding path program 1 times [2022-11-23 14:44:19,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:19,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743329043] [2022-11-23 14:44:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:19,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:20,314 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 14:44:20,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743329043] [2022-11-23 14:44:20,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743329043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:20,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:20,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:44:20,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423342163] [2022-11-23 14:44:20,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:44:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:20,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:44:20,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:44:20,321 INFO L87 Difference]: Start difference. First operand 150 states and 200 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 14:44:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:20,511 INFO L93 Difference]: Finished difference Result 219 states and 280 transitions. [2022-11-23 14:44:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:44:20,512 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 14:44:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:20,517 INFO L225 Difference]: With dead ends: 219 [2022-11-23 14:44:20,517 INFO L226 Difference]: Without dead ends: 152 [2022-11-23 14:44:20,525 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 14:44:20,529 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:20,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:44:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-23 14:44:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-23 14:44:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-23 14:44:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 202 transitions. [2022-11-23 14:44:20,558 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 202 transitions. Word has length 69 [2022-11-23 14:44:20,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:20,558 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 202 transitions. [2022-11-23 14:44:20,559 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 14:44:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 202 transitions. [2022-11-23 14:44:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 14:44:20,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:20,565 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 14:44:20,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:44:20,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 986992234, now seen corresponding path program 1 times [2022-11-23 14:44:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:20,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765795854] [2022-11-23 14:44:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:20,736 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 14:44:20,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:20,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765795854] [2022-11-23 14:44:20,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765795854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:20,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:20,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:44:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751751380] [2022-11-23 14:44:20,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:20,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:44:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:44:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:44:20,739 INFO L87 Difference]: Start difference. First operand 152 states and 202 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 14:44:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:20,845 INFO L93 Difference]: Finished difference Result 334 states and 463 transitions. [2022-11-23 14:44:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:44:20,846 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 14:44:20,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:20,850 INFO L225 Difference]: With dead ends: 334 [2022-11-23 14:44:20,851 INFO L226 Difference]: Without dead ends: 200 [2022-11-23 14:44:20,856 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 14:44:20,863 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 57 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:20,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 353 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:44:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-23 14:44:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2022-11-23 14:44:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 124 states have (on average 1.403225806451613) internal successors, (174), 125 states have internal predecessors, (174), 52 states have call successors, (52), 18 states have call predecessors, (52), 18 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-23 14:44:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 277 transitions. [2022-11-23 14:44:20,886 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 277 transitions. Word has length 74 [2022-11-23 14:44:20,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:20,887 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 277 transitions. [2022-11-23 14:44:20,887 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 14:44:20,887 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 277 transitions. [2022-11-23 14:44:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 14:44:20,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:20,889 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 14:44:20,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:44:20,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash 430471120, now seen corresponding path program 1 times [2022-11-23 14:44:20,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:20,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035584097] [2022-11-23 14:44:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:21,106 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 14:44:21,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:21,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035584097] [2022-11-23 14:44:21,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035584097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:44:21,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778484585] [2022-11-23 14:44:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:21,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:44:21,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:21,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:44:21,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:44:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:21,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1020 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:44:21,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:21,613 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 14:44:21,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:44:21,696 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 14:44:21,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778484585] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:44:21,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [230195982] [2022-11-23 14:44:21,722 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-23 14:44:21,722 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:44:21,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:44:21,734 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:44:21,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:44:57,800 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:44:58,118 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 14:44:58,453 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-23 14:45:00,352 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 14:45:00,392 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-23 14:45:11,902 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-23 14:45:11,936 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-23 14:45:11,982 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-23 14:45:12,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:45:25,676 WARN L233 SmtUtils]: Spent 5.23s 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 14:45:31,190 WARN L233 SmtUtils]: Spent 5.40s 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 14:45:59,471 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 498 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:06,922 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 508 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:28,136 WARN L233 SmtUtils]: Spent 20.89s on a formula simplification. DAG size of input: 589 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:46:48,940 WARN L233 SmtUtils]: Spent 20.46s on a formula simplification. DAG size of input: 591 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:47:48,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [230195982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:47:48,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:47:48,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-23 14:47:48,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970646641] [2022-11-23 14:47:48,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:47:48,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 14:47:48,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:47:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 14:47:48,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2131, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:47:48,485 INFO L87 Difference]: Start difference. First operand 195 states and 277 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 14:48:00,867 WARN L233 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:10,916 WARN L233 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:21,552 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 589 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:32,335 WARN L233 SmtUtils]: Spent 10.18s on a formula simplification. DAG size of input: 587 DAG size of output: 434 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:43,171 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 589 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:53,870 WARN L233 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 583 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:49:07,085 WARN L233 SmtUtils]: Spent 12.38s on a formula simplification. DAG size of input: 590 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:49:17,543 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 586 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:49:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:49:37,115 INFO L93 Difference]: Finished difference Result 552 states and 849 transitions. [2022-11-23 14:49:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 14:49:37,124 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 14:49:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:49:37,137 INFO L225 Difference]: With dead ends: 552 [2022-11-23 14:49:37,138 INFO L226 Difference]: Without dead ends: 375 [2022-11-23 14:49:37,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 240.3s TimeCoverageRelationStatistics Valid=193, Invalid=2887, Unknown=0, NotChecked=0, Total=3080 [2022-11-23 14:49:37,143 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 264 mSDsluCounter, 4027 mSDsCounter, 0 mSdLazyCounter, 5373 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 4232 SdHoareTripleChecker+Invalid, 5400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 5373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:49:37,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 4232 Invalid, 5400 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 5373 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2022-11-23 14:49:37,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-23 14:49:37,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 309. [2022-11-23 14:49:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 219 states have (on average 1.452054794520548) internal successors, (318), 221 states have internal predecessors, (318), 65 states have call successors, (65), 25 states have call predecessors, (65), 24 states have return successors, (65), 62 states have call predecessors, (65), 64 states have call successors, (65) [2022-11-23 14:49:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 448 transitions. [2022-11-23 14:49:37,396 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 448 transitions. Word has length 75 [2022-11-23 14:49:37,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:49:37,399 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 448 transitions. [2022-11-23 14:49:37,399 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 14:49:37,399 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 448 transitions. [2022-11-23 14:49:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:49:37,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:49:37,403 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 14:49:37,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 14:49:37,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:49:37,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:49:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:49:37,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1417034234, now seen corresponding path program 1 times [2022-11-23 14:49:37,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:49:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118785959] [2022-11-23 14:49:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:49:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:37,755 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 14:49:37,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:49:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118785959] [2022-11-23 14:49:37,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118785959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:49:37,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406705475] [2022-11-23 14:49:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:49:37,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:49:37,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:49:37,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:49:37,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:49:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:49:38,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:49:38,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:49:38,127 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 14:49:38,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:49:38,206 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 14:49:38,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406705475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:49:38,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1728246706] [2022-11-23 14:49:38,210 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 14:49:38,210 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:49:38,211 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:49:38,211 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:49:38,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:50:17,188 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:50:17,681 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-23 14:50:19,500 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-23 14:50:19,538 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 14:50:19,880 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 259 for LOIs [2022-11-23 14:50:55,094 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 251 for LOIs [2022-11-23 14:50:55,127 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-23 14:50:55,168 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 444 for LOIs [2022-11-23 14:50:55,869 INFO L197 IcfgInterpreter]: Interpreting procedure isVerified with input of size 437 for LOIs [2022-11-23 14:50:56,197 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 251 for LOIs [2022-11-23 14:50:56,240 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:51:13,688 WARN L233 SmtUtils]: Spent 5.10s 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 14:51:41,011 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 498 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:51:48,121 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 508 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:08,490 WARN L233 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 587 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:28,959 WARN L233 SmtUtils]: Spent 20.13s on a formula simplification. DAG size of input: 589 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:37,635 WARN L233 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 564 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:52:46,274 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 560 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:53,044 WARN L233 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 609 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:53:59,516 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 609 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:54:10,767 WARN L233 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 607 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:54:23,030 WARN L233 SmtUtils]: Spent 11.47s on a formula simplification. DAG size of input: 643 DAG size of output: 513 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:54:38,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1728246706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:54:38,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:54:38,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [4, 4, 4] total 58 [2022-11-23 14:54:38,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721027965] [2022-11-23 14:54:38,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:54:38,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-23 14:54:38,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:54:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-23 14:54:38,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3125, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 14:54:38,172 INFO L87 Difference]: Start difference. First operand 309 states and 448 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 14:54:51,002 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:55:01,407 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 545 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:55:13,498 WARN L233 SmtUtils]: Spent 11.58s on a formula simplification. DAG size of input: 560 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:55:26,060 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 558 DAG size of output: 435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:55:36,493 WARN L233 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 588 DAG size of output: 440 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:55:49,184 WARN L233 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 555 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:56:04,788 WARN L233 SmtUtils]: Spent 14.64s on a formula simplification. DAG size of input: 562 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:56:17,777 WARN L233 SmtUtils]: Spent 12.44s on a formula simplification. DAG size of input: 592 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:56:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:56:43,989 INFO L93 Difference]: Finished difference Result 535 states and 782 transitions. [2022-11-23 14:56:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-23 14:56:43,990 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 14:56:43,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:56:43,994 INFO L225 Difference]: With dead ends: 535 [2022-11-23 14:56:43,994 INFO L226 Difference]: Without dead ends: 466 [2022-11-23 14:56:43,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 316.2s TimeCoverageRelationStatistics Valid=249, Invalid=4041, Unknown=0, NotChecked=0, Total=4290 [2022-11-23 14:56:43,997 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 300 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 6558 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 4599 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:56:43,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 4599 Invalid, 6570 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 6558 Invalid, 0 Unknown, 0 Unchecked, 30.6s Time] [2022-11-23 14:56:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-11-23 14:56:44,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 316. [2022-11-23 14:56:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 223 states have (on average 1.4394618834080717) internal successors, (321), 225 states have internal predecessors, (321), 66 states have call successors, (66), 27 states have call predecessors, (66), 26 states have return successors, (66), 63 states have call predecessors, (66), 65 states have call successors, (66) [2022-11-23 14:56:44,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 453 transitions. [2022-11-23 14:56:44,228 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 453 transitions. Word has length 80 [2022-11-23 14:56:44,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:56:44,228 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 453 transitions. [2022-11-23 14:56:44,229 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 14:56:44,229 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 453 transitions. [2022-11-23 14:56:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 14:56:44,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:56:44,231 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 14:56:44,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:56:44,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:44,439 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:56:44,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:56:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1083298468, now seen corresponding path program 1 times [2022-11-23 14:56:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:56:44,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535031936] [2022-11-23 14:56:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:56:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:44,604 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 14:56:44,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:56:44,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535031936] [2022-11-23 14:56:44,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535031936] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:56:44,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654797997] [2022-11-23 14:56:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:56:44,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:56:44,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:56:44,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:56:44,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4805c4-a451-4c57-b634-a4cd38175371/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:56:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:56:44,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:56:44,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:56:44,990 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 14:56:44,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:56:45,082 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 14:56:45,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654797997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:56:45,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626237284] [2022-11-23 14:56:45,090 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-23 14:56:45,090 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:56:45,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:56:45,091 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:56:45,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:57:30,996 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 14:57:31,276 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-23 14:57:31,562 INFO L180 IcfgInterpreter]: Interpretation finished