./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7 --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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:06:13,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:06:13,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:06:13,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:06:13,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:06:13,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:06:13,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:06:13,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:06:13,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:06:13,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:06:13,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:06:13,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:06:13,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:06:13,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:06:13,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:06:13,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:06:13,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:06:13,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:06:13,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:06:13,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:06:13,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:06:13,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:06:13,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:06:13,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:06:13,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:06:13,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:06:13,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:06:13,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:06:13,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:06:13,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:06:13,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:06:13,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:06:13,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:06:13,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:06:13,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:06:13,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:06:13,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:06:13,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:06:13,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:06:13,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:06:13,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:06:13,757 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:06:13,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:06:13,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:06:13,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:06:13,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:06:13,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:06:13,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:06:13,807 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:06:13,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:06:13,808 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:06:13,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:06:13,808 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:06:13,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:06:13,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:06:13,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:06:13,809 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:06:13,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:06:13,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:06:13,810 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:06:13,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:06:13,814 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:06:13,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:06:13,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:06:13,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:06:13,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:06:13,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:06:13,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:06:13,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:06:13,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:06:13,818 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:06:13,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:06:13,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:06:13,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:06:13,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:06:13,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:06:13,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:06:13,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:06:13,822 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:06:13,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:06:13,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:06:13,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:06:13,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:06:13,823 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2021-11-25 19:06:14,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:06:14,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:06:14,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:06:14,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:06:14,212 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:06:14,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-25 19:06:14,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/data/0bb6b5ae8/6b644e97fa31451099a9ae33fb0b1bd9/FLAG3ade998b4 [2021-11-25 19:06:14,941 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:06:14,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2021-11-25 19:06:14,972 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/data/0bb6b5ae8/6b644e97fa31451099a9ae33fb0b1bd9/FLAG3ade998b4 [2021-11-25 19:06:15,150 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/data/0bb6b5ae8/6b644e97fa31451099a9ae33fb0b1bd9 [2021-11-25 19:06:15,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:06:15,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:06:15,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:06:15,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:06:15,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:06:15,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:06:15" (1/1) ... [2021-11-25 19:06:15,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b51f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:15, skipping insertion in model container [2021-11-25 19:06:15,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:06:15" (1/1) ... [2021-11-25 19:06:15,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:06:15,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:06:15,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-25 19:06:16,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:06:16,027 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:06:16,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2021-11-25 19:06:16,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:06:16,256 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:06:16,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16 WrapperNode [2021-11-25 19:06:16,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:06:16,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:06:16,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:06:16,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:06:16,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,397 INFO L137 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1303 [2021-11-25 19:06:16,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:06:16,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:06:16,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:06:16,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:06:16,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:06:16,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:06:16,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:06:16,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:06:16,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (1/1) ... [2021-11-25 19:06:16,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:06:16,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:16,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:06:16,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:06:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-11-25 19:06:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-11-25 19:06:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2021-11-25 19:06:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2021-11-25 19:06:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2021-11-25 19:06:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2021-11-25 19:06:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2021-11-25 19:06:16,644 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2021-11-25 19:06:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-11-25 19:06:16,644 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-11-25 19:06:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2021-11-25 19:06:16,645 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2021-11-25 19:06:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-11-25 19:06:16,645 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-11-25 19:06:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2021-11-25 19:06:16,645 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2021-11-25 19:06:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-11-25 19:06:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-11-25 19:06:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2021-11-25 19:06:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2021-11-25 19:06:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-11-25 19:06:16,646 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-11-25 19:06:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-11-25 19:06:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-11-25 19:06:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-11-25 19:06:16,647 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-11-25 19:06:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2021-11-25 19:06:16,648 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2021-11-25 19:06:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2021-11-25 19:06:16,648 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2021-11-25 19:06:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-11-25 19:06:16,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-11-25 19:06:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-11-25 19:06:16,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-11-25 19:06:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-11-25 19:06:16,650 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-11-25 19:06:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-25 19:06:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2021-11-25 19:06:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2021-11-25 19:06:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-11-25 19:06:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-11-25 19:06:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-11-25 19:06:16,651 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-11-25 19:06:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-11-25 19:06:16,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-11-25 19:06:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2021-11-25 19:06:16,653 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2021-11-25 19:06:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:06:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-11-25 19:06:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-11-25 19:06:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-11-25 19:06:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-11-25 19:06:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2021-11-25 19:06:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2021-11-25 19:06:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2021-11-25 19:06:16,657 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2021-11-25 19:06:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2021-11-25 19:06:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2021-11-25 19:06:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2021-11-25 19:06:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2021-11-25 19:06:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-11-25 19:06:16,658 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-11-25 19:06:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-11-25 19:06:16,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-11-25 19:06:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-11-25 19:06:16,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-11-25 19:06:16,659 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-11-25 19:06:16,659 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-11-25 19:06:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-11-25 19:06:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-11-25 19:06:16,660 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-11-25 19:06:16,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-11-25 19:06:16,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2021-11-25 19:06:16,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2021-11-25 19:06:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2021-11-25 19:06:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2021-11-25 19:06:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-11-25 19:06:16,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-11-25 19:06:16,662 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-11-25 19:06:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-11-25 19:06:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:06:16,663 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-11-25 19:06:16,663 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-11-25 19:06:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2021-11-25 19:06:16,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2021-11-25 19:06:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-11-25 19:06:16,665 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-11-25 19:06:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2021-11-25 19:06:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2021-11-25 19:06:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:06:16,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:06:17,051 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:06:17,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:06:18,174 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:06:18,804 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:06:18,804 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:06:18,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:06:18 BoogieIcfgContainer [2021-11-25 19:06:18,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:06:18,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:06:18,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:06:18,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:06:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:06:15" (1/3) ... [2021-11-25 19:06:18,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a9816e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:06:18, skipping insertion in model container [2021-11-25 19:06:18,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:06:16" (2/3) ... [2021-11-25 19:06:18,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a9816e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:06:18, skipping insertion in model container [2021-11-25 19:06:18,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:06:18" (3/3) ... [2021-11-25 19:06:18,818 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2021-11-25 19:06:18,824 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:06:18,824 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:06:18,890 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:06:18,898 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:06:18,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:06:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2021-11-25 19:06:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-25 19:06:18,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:18,984 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:18,984 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:18,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1210651593, now seen corresponding path program 1 times [2021-11-25 19:06:19,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:19,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594260633] [2021-11-25 19:06:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:19,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:06:19,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594260633] [2021-11-25 19:06:19,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594260633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:19,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:19,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:06:19,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242604764] [2021-11-25 19:06:19,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:19,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:06:19,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:06:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:06:19,659 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:06:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:20,048 INFO L93 Difference]: Finished difference Result 726 states and 996 transitions. [2021-11-25 19:06:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:06:20,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2021-11-25 19:06:20,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:20,074 INFO L225 Difference]: With dead ends: 726 [2021-11-25 19:06:20,075 INFO L226 Difference]: Without dead ends: 374 [2021-11-25 19:06:20,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:06:20,090 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:20,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:06:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-25 19:06:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2021-11-25 19:06:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-25 19:06:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2021-11-25 19:06:20,210 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 127 [2021-11-25 19:06:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:20,213 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2021-11-25 19:06:20,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:06:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2021-11-25 19:06:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 19:06:20,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:20,229 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:20,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:06:20,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:20,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1349484640, now seen corresponding path program 1 times [2021-11-25 19:06:20,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:20,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523779393] [2021-11-25 19:06:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:20,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:06:20,443 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:20,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523779393] [2021-11-25 19:06:20,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523779393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:20,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:20,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:06:20,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337837227] [2021-11-25 19:06:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:20,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:06:20,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:20,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:06:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:20,450 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:06:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:20,658 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2021-11-25 19:06:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:20,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 133 [2021-11-25 19:06:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:20,663 INFO L225 Difference]: With dead ends: 592 [2021-11-25 19:06:20,666 INFO L226 Difference]: Without dead ends: 376 [2021-11-25 19:06:20,670 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:06:20,673 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:20,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:06:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-25 19:06:20,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-25 19:06:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-25 19:06:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2021-11-25 19:06:20,714 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 133 [2021-11-25 19:06:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:20,718 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2021-11-25 19:06:20,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:06:20,718 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2021-11-25 19:06:20,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-25 19:06:20,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:20,724 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:20,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:06:20,724 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:20,726 INFO L85 PathProgramCache]: Analyzing trace with hash 724788588, now seen corresponding path program 1 times [2021-11-25 19:06:20,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:20,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499541892] [2021-11-25 19:06:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:20,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:06:20,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:20,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499541892] [2021-11-25 19:06:20,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499541892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:06:20,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:06:20,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:06:20,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494593773] [2021-11-25 19:06:20,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:06:20,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:06:20,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:06:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:06:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:06:20,890 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:06:21,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:06:21,064 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2021-11-25 19:06:21,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:06:21,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2021-11-25 19:06:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:06:21,072 INFO L225 Difference]: With dead ends: 751 [2021-11-25 19:06:21,073 INFO L226 Difference]: Without dead ends: 443 [2021-11-25 19:06:21,074 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:06:21,084 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:06:21,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:06:21,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-25 19:06:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2021-11-25 19:06:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2021-11-25 19:06:21,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2021-11-25 19:06:21,136 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 138 [2021-11-25 19:06:21,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:06:21,137 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2021-11-25 19:06:21,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:06:21,139 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2021-11-25 19:06:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-25 19:06:21,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:06:21,149 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:06:21,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:06:21,150 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:06:21,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:06:21,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1961562236, now seen corresponding path program 1 times [2021-11-25 19:06:21,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:06:21,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873007348] [2021-11-25 19:06:21,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:21,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:06:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:06:21,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:06:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873007348] [2021-11-25 19:06:21,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873007348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:06:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961995606] [2021-11-25 19:06:21,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:06:21,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:06:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:06:21,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:06:21,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:06:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:06:21,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:06:21,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:06:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:06:22,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:06:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:06:22,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961995606] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:06:22,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236460108] [2021-11-25 19:06:22,619 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2021-11-25 19:06:22,619 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:06:22,627 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:06:22,634 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:06:22,635 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:06:55,108 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2021-11-25 19:06:56,064 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2021-11-25 19:06:57,369 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2021-11-25 19:07:22,930 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2021-11-25 19:07:23,157 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2021-11-25 19:07:24,313 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2021-11-25 19:07:24,548 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2021-11-25 19:07:25,259 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 467 for LOIs [2021-11-25 19:07:26,045 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 465 for LOIs [2021-11-25 19:07:26,740 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 463 for LOIs [2021-11-25 19:07:31,112 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 264 for LOIs [2021-11-25 19:07:31,241 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 260 for LOIs [2021-11-25 19:07:31,889 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 449 for LOIs [2021-11-25 19:07:32,115 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 260 for LOIs [2021-11-25 19:07:32,669 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 247 for LOIs [2021-11-25 19:07:32,709 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2021-11-25 19:07:32,756 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 443 for LOIs [2021-11-25 19:07:33,257 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:08:40,916 WARN L227 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 720 DAG size of output: 492 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:08:48,287 WARN L227 SmtUtils]: Spent 7.11s on a formula simplification. DAG size of input: 717 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:08,605 WARN L227 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 548 DAG size of output: 393 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:16,530 WARN L227 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 550 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:24,411 WARN L227 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 550 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:32,296 WARN L227 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 548 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:09:45,639 WARN L227 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 549 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:11:31,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [236460108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:11:31,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:11:31,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [4, 4, 4] total 90 [2021-11-25 19:11:31,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003783734] [2021-11-25 19:11:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:11:31,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-25 19:11:31,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:11:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-25 19:11:31,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=7688, Unknown=0, NotChecked=0, Total=8010 [2021-11-25 19:11:31,145 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-25 19:12:20,355 WARN L227 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 721 DAG size of output: 576 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:28,419 WARN L227 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 722 DAG size of output: 577 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:37,390 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 730 DAG size of output: 581 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:44,355 WARN L227 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 646 DAG size of output: 568 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:50,548 WARN L227 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 633 DAG size of output: 580 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:12:57,113 WARN L227 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 439 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:13:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:34,821 INFO L93 Difference]: Finished difference Result 1266 states and 1840 transitions. [2021-11-25 19:13:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-25 19:13:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) Word has length 139 [2021-11-25 19:13:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:34,829 INFO L225 Difference]: With dead ends: 1266 [2021-11-25 19:13:34,829 INFO L226 Difference]: Without dead ends: 849 [2021-11-25 19:13:34,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 323 SyntacticMatches, 8 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4509 ImplicationChecksByTransitivity, 314.5s TimeCoverageRelationStatistics Valid=468, Invalid=10874, Unknown=0, NotChecked=0, Total=11342 [2021-11-25 19:13:34,836 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 621 mSDsluCounter, 13332 mSDsCounter, 0 mSdLazyCounter, 17441 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 13474 SdHoareTripleChecker+Invalid, 17567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 17441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:34,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 13474 Invalid, 17567 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [126 Valid, 17441 Invalid, 0 Unknown, 0 Unchecked, 46.3s Time] [2021-11-25 19:13:34,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-25 19:13:35,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 682. [2021-11-25 19:13:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 475 states have (on average 1.3621052631578947) internal successors, (647), 497 states have internal predecessors, (647), 143 states have call successors, (143), 66 states have call predecessors, (143), 63 states have return successors, (147), 137 states have call predecessors, (147), 142 states have call successors, (147) [2021-11-25 19:13:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 937 transitions. [2021-11-25 19:13:35,023 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 937 transitions. Word has length 139 [2021-11-25 19:13:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:35,024 INFO L470 AbstractCegarLoop]: Abstraction has 682 states and 937 transitions. [2021-11-25 19:13:35,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2021-11-25 19:13:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 937 transitions. [2021-11-25 19:13:35,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 19:13:35,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:35,029 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:35,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:13:35,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:35,229 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1087718300, now seen corresponding path program 1 times [2021-11-25 19:13:35,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:35,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631273078] [2021-11-25 19:13:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:35,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:35,319 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-25 19:13:35,320 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:35,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631273078] [2021-11-25 19:13:35,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631273078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:35,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:35,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:35,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696216678] [2021-11-25 19:13:35,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:35,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:35,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:35,326 INFO L87 Difference]: Start difference. First operand 682 states and 937 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:35,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:35,700 INFO L93 Difference]: Finished difference Result 1700 states and 2396 transitions. [2021-11-25 19:13:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:35,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2021-11-25 19:13:35,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:35,709 INFO L225 Difference]: With dead ends: 1700 [2021-11-25 19:13:35,709 INFO L226 Difference]: Without dead ends: 1069 [2021-11-25 19:13:35,712 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:35,713 INFO L933 BasicCegarLoop]: 786 mSDtfsCounter, 468 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:35,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 1199 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:35,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2021-11-25 19:13:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1065. [2021-11-25 19:13:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 711 states have (on average 1.3558368495077355) internal successors, (964), 750 states have internal predecessors, (964), 248 states have call successors, (248), 108 states have call predecessors, (248), 105 states have return successors, (271), 241 states have call predecessors, (271), 246 states have call successors, (271) [2021-11-25 19:13:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1483 transitions. [2021-11-25 19:13:35,927 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1483 transitions. Word has length 141 [2021-11-25 19:13:35,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:35,928 INFO L470 AbstractCegarLoop]: Abstraction has 1065 states and 1483 transitions. [2021-11-25 19:13:35,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1483 transitions. [2021-11-25 19:13:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 19:13:35,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:35,934 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:35,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:13:35,935 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash 600468868, now seen corresponding path program 1 times [2021-11-25 19:13:35,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:35,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573328667] [2021-11-25 19:13:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:35,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-25 19:13:35,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:35,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573328667] [2021-11-25 19:13:35,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573328667] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:35,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:35,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:35,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654458477] [2021-11-25 19:13:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:35,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:35,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:35,998 INFO L87 Difference]: Start difference. First operand 1065 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:36,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:36,463 INFO L93 Difference]: Finished difference Result 2845 states and 4052 transitions. [2021-11-25 19:13:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:36,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2021-11-25 19:13:36,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:36,478 INFO L225 Difference]: With dead ends: 2845 [2021-11-25 19:13:36,478 INFO L226 Difference]: Without dead ends: 1820 [2021-11-25 19:13:36,483 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:36,485 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 478 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:36,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1255 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:13:36,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-25 19:13:36,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1818. [2021-11-25 19:13:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1178 states have (on average 1.3497453310696095) internal successors, (1590), 1248 states have internal predecessors, (1590), 451 states have call successors, (451), 191 states have call predecessors, (451), 188 states have return successors, (519), 441 states have call predecessors, (519), 447 states have call successors, (519) [2021-11-25 19:13:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2560 transitions. [2021-11-25 19:13:36,840 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2560 transitions. Word has length 141 [2021-11-25 19:13:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:36,841 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 2560 transitions. [2021-11-25 19:13:36,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:13:36,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2560 transitions. [2021-11-25 19:13:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-25 19:13:36,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:36,851 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:36,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:13:36,851 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1977659173, now seen corresponding path program 1 times [2021-11-25 19:13:36,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:36,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824901491] [2021-11-25 19:13:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:36,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-25 19:13:36,935 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:36,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824901491] [2021-11-25 19:13:36,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824901491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:36,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:36,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:13:36,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413624991] [2021-11-25 19:13:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:36,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:13:36,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:13:36,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:13:36,938 INFO L87 Difference]: Start difference. First operand 1818 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:13:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:37,487 INFO L93 Difference]: Finished difference Result 4566 states and 6436 transitions. [2021-11-25 19:13:37,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:13:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 143 [2021-11-25 19:13:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:37,511 INFO L225 Difference]: With dead ends: 4566 [2021-11-25 19:13:37,512 INFO L226 Difference]: Without dead ends: 3060 [2021-11-25 19:13:37,519 INFO L932 BasicCegarLoop]: 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 [2021-11-25 19:13:37,521 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 434 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:37,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1121 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:13:37,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2021-11-25 19:13:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3056. [2021-11-25 19:13:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 2010 states have (on average 1.3343283582089551) internal successors, (2682), 2095 states have internal predecessors, (2682), 718 states have call successors, (718), 330 states have call predecessors, (718), 327 states have return successors, (836), 702 states have call predecessors, (836), 710 states have call successors, (836) [2021-11-25 19:13:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4236 transitions. [2021-11-25 19:13:37,997 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4236 transitions. Word has length 143 [2021-11-25 19:13:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:37,999 INFO L470 AbstractCegarLoop]: Abstraction has 3056 states and 4236 transitions. [2021-11-25 19:13:37,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 19:13:37,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4236 transitions. [2021-11-25 19:13:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-25 19:13:38,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:38,012 INFO L514 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:38,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:13:38,012 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:38,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1546409337, now seen corresponding path program 1 times [2021-11-25 19:13:38,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:38,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042549302] [2021-11-25 19:13:38,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:38,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:13:38,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042549302] [2021-11-25 19:13:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042549302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080695323] [2021-11-25 19:13:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:38,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:38,107 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:38,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_961070a4-ede0-4c93-8628-c50e0a193754/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:13:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:38,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:13:38,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:13:38,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:13:39,004 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-25 19:13:39,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080695323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:13:39,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1029701807] [2021-11-25 19:13:39,010 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2021-11-25 19:13:39,010 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:13:39,011 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:13:39,011 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:13:39,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:14:04,365 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2021-11-25 19:14:05,412 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2021-11-25 19:14:06,560 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2021-11-25 19:14:31,158 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2021-11-25 19:14:31,378 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2021-11-25 19:14:32,518 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 457 for LOIs [2021-11-25 19:14:32,770 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2021-11-25 19:14:33,467 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 467 for LOIs [2021-11-25 19:14:36,447 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 274 for LOIs [2021-11-25 19:14:36,610 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 274 for LOIs [2021-11-25 19:14:38,609 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 266 for LOIs [2021-11-25 19:14:38,742 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 262 for LOIs [2021-11-25 19:14:39,455 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 449 for LOIs [2021-11-25 19:14:39,691 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 262 for LOIs [2021-11-25 19:14:40,198 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 249 for LOIs [2021-11-25 19:14:40,238 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2021-11-25 19:14:40,282 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2021-11-25 19:14:40,768 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 437 for LOIs [2021-11-25 19:14:40,990 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:15:41,308 WARN L227 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 457 DAG size of output: 278 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:15:47,269 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 480 DAG size of output: 298 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:15:55,356 WARN L227 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 720 DAG size of output: 492 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:16:03,202 WARN L227 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 717 DAG size of output: 529 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:16:24,991 WARN L227 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 548 DAG size of output: 393 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:16:33,971 WARN L227 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 550 DAG size of output: 395 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:16:43,609 WARN L227 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 550 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:16:51,526 WARN L227 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 548 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:17:04,599 WARN L227 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 549 DAG size of output: 394 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)