./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:04:23,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:04:23,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:04:23,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:04:23,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:04:23,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:04:23,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:04:23,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:04:23,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:04:23,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:04:23,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:04:23,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:04:23,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:04:23,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:04:23,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:04:23,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:04:23,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:04:23,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:04:23,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:04:23,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:04:23,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:04:23,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:04:23,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:04:23,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:04:23,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:04:23,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:04:23,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:04:23,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:04:23,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:04:23,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:04:23,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:04:23,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:04:23,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:04:23,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:04:23,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:04:23,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:04:23,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:04:23,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:04:23,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:04:23,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:04:23,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:04:23,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:04:23,763 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:04:23,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:04:23,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:04:23,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:04:23,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:04:23,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:04:23,766 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:04:23,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:04:23,766 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:04:23,766 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:04:23,767 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:04:23,767 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:04:23,767 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:04:23,767 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:04:23,768 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:04:23,768 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:04:23,768 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:04:23,769 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:04:23,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:04:23,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:04:23,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:04:23,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:04:23,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:04:23,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:04:23,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:04:23,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:04:23,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:04:23,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:04:23,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:04:23,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:04:23,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:04:23,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:04:23,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:04:23,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:04:23,774 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:04:23,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:04:23,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:04:23,774 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:04:23,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:04:23,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:04:23,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:04:23,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a7679b9688c44fd84543e8b684d34e72b379518d806d27199a245477e871776 [2022-11-23 14:04:24,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:04:24,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:04:24,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:04:24,123 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:04:24,124 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:04:24,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-11-23 14:04:27,154 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:04:27,500 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:04:27,500 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c [2022-11-23 14:04:27,537 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/data/53c3b4a98/60642ccf14fa4f8fa9fd0e1a4e8df6be/FLAG18f5af66d [2022-11-23 14:04:27,558 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/data/53c3b4a98/60642ccf14fa4f8fa9fd0e1a4e8df6be [2022-11-23 14:04:27,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:04:27,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:04:27,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:04:27,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:04:27,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:04:27,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:27" (1/1) ... [2022-11-23 14:04:27,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ccf8bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:27, skipping insertion in model container [2022-11-23 14:04:27,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:27" (1/1) ... [2022-11-23 14:04:27,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:04:27,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:04:28,236 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-11-23 14:04:28,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:04:28,319 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:04:28,468 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/sv-benchmarks/c/product-lines/email_spec8_product16.cil.c[51682,51695] [2022-11-23 14:04:28,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:04:28,510 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:04:28,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28 WrapperNode [2022-11-23 14:04:28,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:04:28,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:04:28,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:04:28,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:04:28,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,592 INFO L138 Inliner]: procedures = 126, calls = 201, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 994 [2022-11-23 14:04:28,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:04:28,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:04:28,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:04:28,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:04:28,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:04:28,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:04:28,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:04:28,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:04:28,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (1/1) ... [2022-11-23 14:04:28,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:04:28,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:28,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:04:28,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:04:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 14:04:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 14:04:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 14:04:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 14:04:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 14:04:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 14:04:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 14:04:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 14:04:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 14:04:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 14:04:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 14:04:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 14:04:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 14:04:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 14:04:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 14:04:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 14:04:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 14:04:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:04:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 14:04:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 14:04:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 14:04:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 14:04:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 14:04:28,783 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 14:04:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 14:04:28,784 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 14:04:28,784 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 14:04:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 14:04:28,785 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 14:04:28,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 14:04:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 14:04:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 14:04:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:04:28,787 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 14:04:28,787 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 14:04:28,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:04:28,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:04:29,087 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:04:29,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:04:29,917 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:04:30,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:04:30,428 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:04:30,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:30 BoogieIcfgContainer [2022-11-23 14:04:30,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:04:30,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:04:30,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:04:30,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:04:30,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:04:27" (1/3) ... [2022-11-23 14:04:30,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e1e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:30, skipping insertion in model container [2022-11-23 14:04:30,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:28" (2/3) ... [2022-11-23 14:04:30,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134e1e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:04:30, skipping insertion in model container [2022-11-23 14:04:30,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:04:30" (3/3) ... [2022-11-23 14:04:30,443 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product16.cil.c [2022-11-23 14:04:30,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:04:30,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:04:30,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:04:30,538 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@248e5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:04:30,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:04:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-11-23 14:04:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 14:04:30,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:30,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:30,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1798849747, now seen corresponding path program 1 times [2022-11-23 14:04:30,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:30,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910970962] [2022-11-23 14:04:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:30,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:04:30,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:30,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910970962] [2022-11-23 14:04:30,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910970962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:30,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:30,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:04:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552999194] [2022-11-23 14:04:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:30,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:04:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:04:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:04:31,005 INFO L87 Difference]: Start difference. First operand has 155 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 96 states have internal predecessors, (126), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:04:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:31,115 INFO L93 Difference]: Finished difference Result 227 states and 310 transitions. [2022-11-23 14:04:31,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:04:31,117 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 56 [2022-11-23 14:04:31,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:31,127 INFO L225 Difference]: With dead ends: 227 [2022-11-23 14:04:31,128 INFO L226 Difference]: Without dead ends: 152 [2022-11-23 14:04:31,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:04:31,136 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:31,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:31,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-23 14:04:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-23 14:04:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 93 states have internal predecessors, (120), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-23 14:04:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 209 transitions. [2022-11-23 14:04:31,225 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 209 transitions. Word has length 56 [2022-11-23 14:04:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:31,227 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 209 transitions. [2022-11-23 14:04:31,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:04:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 209 transitions. [2022-11-23 14:04:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-23 14:04:31,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:31,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:31,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:04:31,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:31,238 INFO L85 PathProgramCache]: Analyzing trace with hash -127855960, now seen corresponding path program 1 times [2022-11-23 14:04:31,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:31,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224812348] [2022-11-23 14:04:31,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:31,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:04:31,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:31,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224812348] [2022-11-23 14:04:31,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224812348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:31,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:31,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:31,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592848888] [2022-11-23 14:04:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:31,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:31,564 INFO L87 Difference]: Start difference. First operand 152 states and 209 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:04:31,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:31,680 INFO L93 Difference]: Finished difference Result 223 states and 298 transitions. [2022-11-23 14:04:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:31,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 57 [2022-11-23 14:04:31,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:31,683 INFO L225 Difference]: With dead ends: 223 [2022-11-23 14:04:31,684 INFO L226 Difference]: Without dead ends: 154 [2022-11-23 14:04:31,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:31,686 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:31,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:31,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-23 14:04:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-11-23 14:04:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.326086956521739) internal successors, (122), 95 states have internal predecessors, (122), 45 states have call successors, (45), 16 states have call predecessors, (45), 16 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-23 14:04:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2022-11-23 14:04:31,701 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 211 transitions. Word has length 57 [2022-11-23 14:04:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:31,702 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 211 transitions. [2022-11-23 14:04:31,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:04:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 211 transitions. [2022-11-23 14:04:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 14:04:31,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:31,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:04:31,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:31,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:31,706 INFO L85 PathProgramCache]: Analyzing trace with hash -377461035, now seen corresponding path program 1 times [2022-11-23 14:04:31,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:31,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112420371] [2022-11-23 14:04:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:04:31,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:31,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112420371] [2022-11-23 14:04:31,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112420371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:04:31,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:04:31,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:04:31,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787279605] [2022-11-23 14:04:31,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:04:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:04:31,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:04:31,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:04:31,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:31,849 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:04:31,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:04:31,953 INFO L93 Difference]: Finished difference Result 338 states and 481 transitions. [2022-11-23 14:04:31,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:04:31,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 62 [2022-11-23 14:04:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:04:31,956 INFO L225 Difference]: With dead ends: 338 [2022-11-23 14:04:31,956 INFO L226 Difference]: Without dead ends: 202 [2022-11-23 14:04:31,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:04:31,959 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 57 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:04:31,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 377 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:04:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-23 14:04:31,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2022-11-23 14:04:31,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.4112903225806452) internal successors, (175), 127 states have internal predecessors, (175), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-23 14:04:31,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 286 transitions. [2022-11-23 14:04:31,980 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 286 transitions. Word has length 62 [2022-11-23 14:04:31,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:04:31,980 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 286 transitions. [2022-11-23 14:04:31,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:04:31,981 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 286 transitions. [2022-11-23 14:04:31,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 14:04:31,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:04:31,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:04:31,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:04:31,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:04:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:04:31,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1851970374, now seen corresponding path program 1 times [2022-11-23 14:04:31,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:04:31,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313582642] [2022-11-23 14:04:31,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:04:32,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:04:32,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:04:32,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313582642] [2022-11-23 14:04:32,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313582642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:04:32,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424732992] [2022-11-23 14:04:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:04:32,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:04:32,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:04:32,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:04:32,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:04:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:04:32,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:04:32,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:04:32,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:04:32,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:04:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:04:32,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424732992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:04:32,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1994315440] [2022-11-23 14:04:32,686 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-23 14:04:32,686 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:04:32,694 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:04:32,699 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:04:32,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:05:08,157 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:05:08,530 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 14:05:08,881 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:05:23,110 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:05:29,777 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:05:36,845 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:05:43,524 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:05:50,038 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:06:02,185 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:06:08,093 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 502 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:06:16,615 WARN L233 SmtUtils]: Spent 7.19s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:06:27,749 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 582 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:06:48,208 WARN L233 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 584 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:06:57,483 WARN L233 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 572 DAG size of output: 422 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:07:06,140 WARN L233 SmtUtils]: Spent 8.31s on a formula simplification. DAG size of input: 570 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:07:07,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1994315440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:07,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:07:07,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 14:07:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333695413] [2022-11-23 14:07:07,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:07,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:07:07,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:07:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:07:07,483 INFO L87 Difference]: Start difference. First operand 197 states and 286 transitions. Second operand has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-23 14:07:15,916 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 537 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:07:29,543 WARN L233 SmtUtils]: Spent 13.08s on a formula simplification. DAG size of input: 559 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:07:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:37,064 INFO L93 Difference]: Finished difference Result 474 states and 734 transitions. [2022-11-23 14:07:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 14:07:37,065 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 63 [2022-11-23 14:07:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:37,068 INFO L225 Difference]: With dead ends: 474 [2022-11-23 14:07:37,069 INFO L226 Difference]: Without dead ends: 295 [2022-11-23 14:07:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 138.2s TimeCoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:07:37,071 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 112 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2870 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:37,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2870 Invalid, 2062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-11-23 14:07:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-23 14:07:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 220. [2022-11-23 14:07:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 146 states have (on average 1.4246575342465753) internal successors, (208), 149 states have internal predecessors, (208), 56 states have call successors, (56), 17 states have call predecessors, (56), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-23 14:07:37,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 319 transitions. [2022-11-23 14:07:37,234 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 319 transitions. Word has length 63 [2022-11-23 14:07:37,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:37,234 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 319 transitions. [2022-11-23 14:07:37,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 7 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-23 14:07:37,235 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 319 transitions. [2022-11-23 14:07:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 14:07:37,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:37,245 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:37,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:07:37,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:37,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:07:37,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash 195838519, now seen corresponding path program 1 times [2022-11-23 14:07:37,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:37,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933242955] [2022-11-23 14:07:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:37,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:07:37,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:37,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933242955] [2022-11-23 14:07:37,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933242955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:07:37,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:07:37,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:07:37,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169239911] [2022-11-23 14:07:37,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:07:37,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:07:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:07:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:07:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:37,618 INFO L87 Difference]: Start difference. First operand 220 states and 319 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 14:07:37,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:07:37,951 INFO L93 Difference]: Finished difference Result 533 states and 802 transitions. [2022-11-23 14:07:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:07:37,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2022-11-23 14:07:37,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:07:37,955 INFO L225 Difference]: With dead ends: 533 [2022-11-23 14:07:37,955 INFO L226 Difference]: Without dead ends: 337 [2022-11-23 14:07:37,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:07:37,957 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 55 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:07:37,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:07:37,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-23 14:07:38,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2022-11-23 14:07:38,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 233 states have (on average 1.4763948497854078) internal successors, (344), 236 states have internal predecessors, (344), 81 states have call successors, (81), 17 states have call predecessors, (81), 17 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-23 14:07:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 505 transitions. [2022-11-23 14:07:38,160 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 505 transitions. Word has length 68 [2022-11-23 14:07:38,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:07:38,161 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 505 transitions. [2022-11-23 14:07:38,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 14:07:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 505 transitions. [2022-11-23 14:07:38,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 14:07:38,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:07:38,163 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:07:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:07:38,164 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:07:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:07:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -864267835, now seen corresponding path program 1 times [2022-11-23 14:07:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:07:38,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882519105] [2022-11-23 14:07:38,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:38,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:07:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:38,287 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:07:38,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:07:38,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882519105] [2022-11-23 14:07:38,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882519105] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:07:38,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580167079] [2022-11-23 14:07:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:07:38,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:07:38,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:07:38,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:07:38,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:07:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:07:38,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:07:38,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:07:38,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:07:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:07:38,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580167079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:07:38,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1997119879] [2022-11-23 14:07:38,682 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-11-23 14:07:38,682 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:07:38,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:07:38,683 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:07:38,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:08:28,500 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:08:28,840 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-23 14:08:29,164 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-23 14:08:31,196 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 235 for LOIs [2022-11-23 14:08:31,248 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2022-11-23 14:08:55,784 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-11-23 14:08:55,847 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 454 for LOIs [2022-11-23 14:08:57,088 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:09:11,177 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:17,881 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:24,676 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:31,107 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:37,615 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:49,707 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:55,578 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 502 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:03,871 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:24,214 WARN L233 SmtUtils]: Spent 20.02s on a formula simplification. DAG size of input: 587 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:35,201 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 589 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:41,948 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 569 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:58,963 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 454 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:11:04,877 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 469 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:11:37,175 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 598 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:11:40,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1997119879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:40,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:11:40,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-11-23 14:11:40,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137595290] [2022-11-23 14:11:40,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:40,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-23 14:11:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-23 14:11:40,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=2218, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 14:11:40,670 INFO L87 Difference]: Start difference. First operand 332 states and 505 transitions. Second operand has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 14:12:01,498 WARN L233 SmtUtils]: Spent 17.91s on a formula simplification. DAG size of input: 504 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:12:07,100 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 468 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:12:53,870 WARN L233 SmtUtils]: Spent 10.67s on a formula simplification. DAG size of input: 589 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:05,771 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification. DAG size of input: 595 DAG size of output: 418 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:52,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:52,776 INFO L93 Difference]: Finished difference Result 786 states and 1247 transitions. [2022-11-23 14:13:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-23 14:13:52,777 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 69 [2022-11-23 14:13:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:52,783 INFO L225 Difference]: With dead ends: 786 [2022-11-23 14:13:52,783 INFO L226 Difference]: Without dead ends: 517 [2022-11-23 14:13:52,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 272.0s TimeCoverageRelationStatistics Valid=317, Invalid=4375, Unknown=0, NotChecked=0, Total=4692 [2022-11-23 14:13:52,786 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 271 mSDsluCounter, 4295 mSDsCounter, 0 mSdLazyCounter, 5479 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:52,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 4495 Invalid, 5516 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 5479 Invalid, 0 Unknown, 0 Unchecked, 22.8s Time] [2022-11-23 14:13:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-23 14:13:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 415. [2022-11-23 14:13:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 303 states have (on average 1.504950495049505) internal successors, (456), 308 states have internal predecessors, (456), 90 states have call successors, (90), 23 states have call predecessors, (90), 21 states have return successors, (89), 85 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-23 14:13:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 635 transitions. [2022-11-23 14:13:53,120 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 635 transitions. Word has length 69 [2022-11-23 14:13:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:53,121 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 635 transitions. [2022-11-23 14:13:53,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2) internal successors, (36), 28 states have internal predecessors, (36), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 14:13:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 635 transitions. [2022-11-23 14:13:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 14:13:53,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:53,124 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:13:53,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:13:53,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:53,328 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1040193002, now seen corresponding path program 1 times [2022-11-23 14:13:53,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:53,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535874134] [2022-11-23 14:13:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:53,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:13:53,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:53,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535874134] [2022-11-23 14:13:53,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535874134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:13:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228375827] [2022-11-23 14:13:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:53,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:53,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:53,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:53,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:13:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:53,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:13:53,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:13:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:13:53,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:13:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:13:53,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228375827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:13:53,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1309205932] [2022-11-23 14:13:53,882 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-23 14:13:53,882 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:13:53,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:13:53,883 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:13:53,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:14:41,109 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:14:41,464 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 236 for LOIs [2022-11-23 14:14:41,532 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 453 for LOIs [2022-11-23 14:14:41,899 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 14:14:42,238 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 245 for LOIs [2022-11-23 14:14:42,312 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:14:56,129 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:02,659 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:09,607 WARN L233 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:16,130 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:22,543 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 468 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:34,489 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 490 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:40,288 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 502 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:48,521 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 512 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:01,452 WARN L233 SmtUtils]: Spent 12.61s on a formula simplification. DAG size of input: 623 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:13,069 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 572 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:29,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1309205932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:16:29,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:16:29,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-23 14:16:29,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522762994] [2022-11-23 14:16:29,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:16:29,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 14:16:29,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:16:29,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 14:16:29,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 14:16:29,617 INFO L87 Difference]: Start difference. First operand 415 states and 635 transitions. Second operand has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-23 14:16:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:16:53,569 INFO L93 Difference]: Finished difference Result 843 states and 1338 transitions. [2022-11-23 14:16:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 14:16:53,569 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 72 [2022-11-23 14:16:53,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:16:53,574 INFO L225 Difference]: With dead ends: 843 [2022-11-23 14:16:53,574 INFO L226 Difference]: Without dead ends: 574 [2022-11-23 14:16:53,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 117.0s TimeCoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 14:16:53,576 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 173 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:16:53,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 3254 Invalid, 3092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-23 14:16:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-23 14:16:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 500. [2022-11-23 14:16:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 380 states have (on average 1.5289473684210526) internal successors, (581), 387 states have internal predecessors, (581), 95 states have call successors, (95), 26 states have call predecessors, (95), 24 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 14:16:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 770 transitions. [2022-11-23 14:16:54,014 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 770 transitions. Word has length 72 [2022-11-23 14:16:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:16:54,015 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 770 transitions. [2022-11-23 14:16:54,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 1.894736842105263) internal successors, (36), 17 states have internal predecessors, (36), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-23 14:16:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 770 transitions. [2022-11-23 14:16:54,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 14:16:54,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:54,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:16:54,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:16:54,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:16:54,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:16:54,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:54,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1650153239, now seen corresponding path program 1 times [2022-11-23 14:16:54,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:54,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387639336] [2022-11-23 14:16:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:54,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:16:54,356 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:16:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387639336] [2022-11-23 14:16:54,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387639336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:16:54,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061153328] [2022-11-23 14:16:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:54,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:16:54,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:16:54,358 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:16:54,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989cb36c-8335-4255-b96b-73f99dd2a344/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:16:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:54,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:16:54,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:16:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:16:54,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:16:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:16:54,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061153328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:16:54,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1590958320] [2022-11-23 14:16:54,745 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-23 14:16:54,745 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:16:54,746 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:16:54,746 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:16:54,746 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:18:04,799 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-23 14:18:05,126 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-23 14:18:05,455 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs