./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product12.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_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/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_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/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_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/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 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:59:20,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:59:20,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:59:20,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:59:20,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:59:20,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:59:20,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:59:20,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:59:20,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:59:20,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:59:20,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:59:20,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:59:20,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:59:20,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:59:20,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:59:20,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:59:20,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:59:20,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:59:20,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:59:20,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:59:20,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:59:20,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:59:20,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:59:20,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:59:20,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:59:20,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:59:20,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:59:20,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:59:20,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:59:20,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:59:20,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:59:20,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:59:20,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:59:20,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:59:20,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:59:20,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:59:20,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:59:20,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:59:20,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:59:20,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:59:20,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:59:20,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:59:20,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:59:20,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:59:20,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:59:20,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:59:20,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:59:20,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:59:20,444 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:59:20,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:59:20,444 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:59:20,445 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:59:20,446 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:59:20,446 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:59:20,447 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:59:20,447 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:59:20,447 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:59:20,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:59:20,448 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:59:20,448 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:59:20,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:59:20,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:59:20,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:59:20,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:59:20,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:59:20,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:59:20,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:59:20,451 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:59:20,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:59:20,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:59:20,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:59:20,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:59:20,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:59:20,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:59:20,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:20,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:59:20,454 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:59:20,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:59:20,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:59:20,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:59:20,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:59:20,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:59:20,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:59:20,457 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_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a023004d1923934c700fbd43377f50b99f9b3dcadd2a9eb1f89b20b18aa1436 [2022-11-23 15:59:20,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:59:20,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:59:20,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:59:20,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:59:20,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:59:20,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2022-11-23 15:59:23,916 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:59:24,248 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:59:24,248 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c [2022-11-23 15:59:24,280 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/data/030e2f5dd/895e7c8acb4e4a8caf840baf305349a0/FLAG5d6477dad [2022-11-23 15:59:24,300 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/data/030e2f5dd/895e7c8acb4e4a8caf840baf305349a0 [2022-11-23 15:59:24,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:59:24,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:59:24,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:24,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:59:24,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:59:24,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:24" (1/1) ... [2022-11-23 15:59:24,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f2271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:24, skipping insertion in model container [2022-11-23 15:59:24,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:59:24" (1/1) ... [2022-11-23 15:59:24,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:59:24,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:59:24,920 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_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-11-23 15:59:24,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:24,972 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:59:25,057 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_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/sv-benchmarks/c/product-lines/email_spec6_product12.cil.c[52000,52013] [2022-11-23 15:59:25,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:59:25,096 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:59:25,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25 WrapperNode [2022-11-23 15:59:25,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:59:25,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:25,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:59:25,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:59:25,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,174 INFO L138 Inliner]: procedures = 123, calls = 193, calls flagged for inlining = 49, calls inlined = 39, statements flattened = 807 [2022-11-23 15:59:25,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:59:25,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:59:25,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:59:25,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:59:25,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:59:25,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:59:25,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:59:25,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:59:25,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (1/1) ... [2022-11-23 15:59:25,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:59:25,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:25,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:59:25,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:59:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 15:59:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 15:59:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 15:59:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 15:59:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 15:59:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 15:59:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 15:59:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 15:59:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 15:59:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 15:59:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 15:59:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 15:59:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 15:59:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 15:59:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 15:59:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 15:59:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 15:59:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 15:59:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 15:59:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:59:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 15:59:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 15:59:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 15:59:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 15:59:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 15:59:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 15:59:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 15:59:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 15:59:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 15:59:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 15:59:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 15:59:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 15:59:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 15:59:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 15:59:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:59:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 15:59:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 15:59:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:59:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:59:25,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:59:25,601 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:59:26,380 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:59:26,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:59:26,788 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:59:26,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26 BoogieIcfgContainer [2022-11-23 15:59:26,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:59:26,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:59:26,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:59:26,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:59:26,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:59:24" (1/3) ... [2022-11-23 15:59:26,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c87a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:26, skipping insertion in model container [2022-11-23 15:59:26,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:59:25" (2/3) ... [2022-11-23 15:59:26,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c87a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:59:26, skipping insertion in model container [2022-11-23 15:59:26,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:59:26" (3/3) ... [2022-11-23 15:59:26,807 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2022-11-23 15:59:26,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:59:26,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:59:26,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:59:26,904 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;@2ce61212, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:59:26,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:59:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-23 15:59:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 15:59:26,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:26,923 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] [2022-11-23 15:59:26,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1702880435, now seen corresponding path program 1 times [2022-11-23 15:59:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694711142] [2022-11-23 15:59:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:59:27,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:27,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694711142] [2022-11-23 15:59:27,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694711142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:27,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:27,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:59:27,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569869285] [2022-11-23 15:59:27,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:27,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:59:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:59:27,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:59:27,572 INFO L87 Difference]: Start difference. First operand has 152 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 94 states have internal predecessors, (123), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:59:27,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:27,747 INFO L93 Difference]: Finished difference Result 221 states and 296 transitions. [2022-11-23 15:59:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:59:27,750 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 69 [2022-11-23 15:59:27,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:27,765 INFO L225 Difference]: With dead ends: 221 [2022-11-23 15:59:27,765 INFO L226 Difference]: Without dead ends: 149 [2022-11-23 15:59:27,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:59:27,771 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:27,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:27,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-23 15:59:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-23 15:59:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 91 states have internal predecessors, (117), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 15:59:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2022-11-23 15:59:27,849 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 69 [2022-11-23 15:59:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:27,851 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2022-11-23 15:59:27,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:59:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2022-11-23 15:59:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 15:59:27,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:27,865 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] [2022-11-23 15:59:27,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:59:27,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1149717873, now seen corresponding path program 1 times [2022-11-23 15:59:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263347831] [2022-11-23 15:59:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:27,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:59:28,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:28,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263347831] [2022-11-23 15:59:28,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263347831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:28,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:28,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104088150] [2022-11-23 15:59:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:28,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:28,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:28,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:28,110 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:59:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:28,209 INFO L93 Difference]: Finished difference Result 217 states and 284 transitions. [2022-11-23 15:59:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:28,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 70 [2022-11-23 15:59:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:28,212 INFO L225 Difference]: With dead ends: 217 [2022-11-23 15:59:28,212 INFO L226 Difference]: Without dead ends: 151 [2022-11-23 15:59:28,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:28,215 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:28,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-23 15:59:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-23 15:59:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.3222222222222222) internal successors, (119), 93 states have internal predecessors, (119), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 15:59:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2022-11-23 15:59:28,230 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 70 [2022-11-23 15:59:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:28,231 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2022-11-23 15:59:28,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:59:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2022-11-23 15:59:28,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 15:59:28,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:28,234 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:28,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:59:28,234 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:28,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:28,235 INFO L85 PathProgramCache]: Analyzing trace with hash 841286446, now seen corresponding path program 1 times [2022-11-23 15:59:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:28,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626018677] [2022-11-23 15:59:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:28,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:59:28,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:28,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626018677] [2022-11-23 15:59:28,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626018677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:59:28,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:59:28,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:59:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006562257] [2022-11-23 15:59:28,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:59:28,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:59:28,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:59:28,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:59:28,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:28,373 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:59:28,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:59:28,488 INFO L93 Difference]: Finished difference Result 332 states and 467 transitions. [2022-11-23 15:59:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:59:28,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2022-11-23 15:59:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:59:28,495 INFO L225 Difference]: With dead ends: 332 [2022-11-23 15:59:28,496 INFO L226 Difference]: Without dead ends: 199 [2022-11-23 15:59:28,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:59:28,508 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 57 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:59:28,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 374 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:59:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-23 15:59:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 194. [2022-11-23 15:59:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 125 states have internal predecessors, (172), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-23 15:59:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 279 transitions. [2022-11-23 15:59:28,538 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 279 transitions. Word has length 75 [2022-11-23 15:59:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:59:28,540 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 279 transitions. [2022-11-23 15:59:28,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 15:59:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 279 transitions. [2022-11-23 15:59:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 15:59:28,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:59:28,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:59:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:59:28,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:59:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:59:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 829657129, now seen corresponding path program 1 times [2022-11-23 15:59:28,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:59:28,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074054395] [2022-11-23 15:59:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:59:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:59:28,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:59:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074054395] [2022-11-23 15:59:28,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074054395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:59:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090170764] [2022-11-23 15:59:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:59:28,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:59:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:59:28,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:59:28,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:59:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:59:29,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 962 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:59:29,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:59:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:59:29,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:59:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 15:59:29,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090170764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:59:29,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2092737626] [2022-11-23 15:59:29,425 INFO L159 IcfgInterpreter]: Started Sifa with 63 locations of interest [2022-11-23 15:59:29,426 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:59:29,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:59:29,437 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:59:29,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:00:01,315 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 448 for LOIs [2022-11-23 16:00:01,614 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:00:01,929 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 252 for LOIs [2022-11-23 16:00:02,660 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 247 for LOIs [2022-11-23 16:00:17,916 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 459 for LOIs [2022-11-23 16:00:18,469 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-23 16:00:20,406 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 244 for LOIs [2022-11-23 16:00:20,465 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:00:33,406 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 448 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:00:38,883 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 471 DAG size of output: 268 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:00:52,434 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 468 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:04,447 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 490 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:22,894 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 568 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:29,747 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 570 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:01:54,819 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 476 DAG size of output: 261 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:10,961 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 459 DAG size of output: 255 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:17,438 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 477 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:40,925 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 565 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:48,225 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 566 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:02:54,420 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 573 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:01,096 WARN L233 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 598 DAG size of output: 387 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:03:01,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2092737626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:01,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:03:01,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [4, 4, 4] total 48 [2022-11-23 16:03:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189533340] [2022-11-23 16:03:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:01,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-23 16:03:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-23 16:03:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=2127, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 16:03:01,104 INFO L87 Difference]: Start difference. First operand 194 states and 279 transitions. Second operand has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 27 states have internal predecessors, (39), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-23 16:03:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:36,237 INFO L93 Difference]: Finished difference Result 507 states and 778 transitions. [2022-11-23 16:03:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-23 16:03:36,238 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 27 states have internal predecessors, (39), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 76 [2022-11-23 16:03:36,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:36,241 INFO L225 Difference]: With dead ends: 507 [2022-11-23 16:03:36,242 INFO L226 Difference]: Without dead ends: 331 [2022-11-23 16:03:36,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 174.8s TimeCoverageRelationStatistics Valid=162, Invalid=2594, Unknown=0, NotChecked=0, Total=2756 [2022-11-23 16:03:36,244 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 189 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 4915 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 4286 SdHoareTripleChecker+Invalid, 4940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:36,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 4286 Invalid, 4940 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [25 Valid, 4915 Invalid, 0 Unknown, 0 Unchecked, 20.3s Time] [2022-11-23 16:03:36,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-23 16:03:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 281. [2022-11-23 16:03:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.450777202072539) internal successors, (280), 197 states have internal predecessors, (280), 65 states have call successors, (65), 23 states have call predecessors, (65), 22 states have return successors, (65), 62 states have call predecessors, (65), 64 states have call successors, (65) [2022-11-23 16:03:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 410 transitions. [2022-11-23 16:03:36,409 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 410 transitions. Word has length 76 [2022-11-23 16:03:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:36,410 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 410 transitions. [2022-11-23 16:03:36,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 27 states have internal predecessors, (39), 14 states have call successors, (16), 8 states have call predecessors, (16), 6 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-23 16:03:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 410 transitions. [2022-11-23 16:03:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 16:03:36,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:36,412 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:36,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:03:36,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:03:36,624 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash -340944604, now seen corresponding path program 1 times [2022-11-23 16:03:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:36,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111111869] [2022-11-23 16:03:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:03:36,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:36,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111111869] [2022-11-23 16:03:36,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111111869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:03:36,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:03:36,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:03:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5229106] [2022-11-23 16:03:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:03:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:03:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:03:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:03:36,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:36,756 INFO L87 Difference]: Start difference. First operand 281 states and 410 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 16:03:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:03:37,101 INFO L93 Difference]: Finished difference Result 676 states and 1026 transitions. [2022-11-23 16:03:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:03:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-23 16:03:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:03:37,105 INFO L225 Difference]: With dead ends: 676 [2022-11-23 16:03:37,105 INFO L226 Difference]: Without dead ends: 421 [2022-11-23 16:03:37,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:03:37,107 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 55 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:03:37,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 377 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:03:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-11-23 16:03:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 414. [2022-11-23 16:03:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 301 states have (on average 1.5182724252491695) internal successors, (457), 305 states have internal predecessors, (457), 90 states have call successors, (90), 23 states have call predecessors, (90), 22 states have return successors, (90), 87 states have call predecessors, (90), 89 states have call successors, (90) [2022-11-23 16:03:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 637 transitions. [2022-11-23 16:03:37,383 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 637 transitions. Word has length 81 [2022-11-23 16:03:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:03:37,384 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 637 transitions. [2022-11-23 16:03:37,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 16:03:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 637 transitions. [2022-11-23 16:03:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 16:03:37,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:03:37,387 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:03:37,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:03:37,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:03:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:03:37,388 INFO L85 PathProgramCache]: Analyzing trace with hash 384282914, now seen corresponding path program 1 times [2022-11-23 16:03:37,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:03:37,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872349772] [2022-11-23 16:03:37,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:03:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:37,521 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:03:37,521 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:03:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872349772] [2022-11-23 16:03:37,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872349772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:03:37,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455851690] [2022-11-23 16:03:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:03:37,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:03:37,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:03:37,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:03:37,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:03:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:03:37,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:03:37,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:03:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:03:37,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:03:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:03:37,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455851690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:03:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [555832288] [2022-11-23 16:03:37,953 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-23 16:03:37,953 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:03:37,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:03:37,955 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:03:37,955 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:04:12,163 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:04:12,450 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:04:12,735 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 251 for LOIs [2022-11-23 16:04:13,367 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 246 for LOIs [2022-11-23 16:04:27,484 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 441 for LOIs [2022-11-23 16:04:27,750 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-23 16:04:29,663 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 243 for LOIs [2022-11-23 16:04:29,705 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:04:51,494 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 445 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:04:57,044 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:02,719 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 468 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:15,862 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 490 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:21,328 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 502 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:05:49,611 WARN L233 SmtUtils]: Spent 21.66s on a formula simplification. DAG size of input: 587 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:01,455 WARN L233 SmtUtils]: Spent 11.46s on a formula simplification. DAG size of input: 589 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:22,055 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 475 DAG size of output: 260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:06:46,181 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 475 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:09,517 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 564 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:18,732 WARN L233 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 565 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:25,540 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 573 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:07:27,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [555832288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:07:27,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:07:27,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [4, 4, 4] total 52 [2022-11-23 16:07:27,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659574530] [2022-11-23 16:07:27,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:07:27,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-23 16:07:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:07:27,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-23 16:07:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2501, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 16:07:27,911 INFO L87 Difference]: Start difference. First operand 414 states and 637 transitions. Second operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 30 states have internal predecessors, (42), 15 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-23 16:07:50,133 WARN L233 SmtUtils]: Spent 19.29s on a formula simplification. DAG size of input: 570 DAG size of output: 446 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:21,340 WARN L233 SmtUtils]: Spent 10.21s on a formula simplification. DAG size of input: 584 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:08:33,325 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 591 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:09:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:09:00,059 INFO L93 Difference]: Finished difference Result 829 states and 1300 transitions. [2022-11-23 16:09:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-23 16:09:00,060 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 32 states have (on average 1.3125) internal successors, (42), 30 states have internal predecessors, (42), 15 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 82 [2022-11-23 16:09:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:09:00,064 INFO L225 Difference]: With dead ends: 829 [2022-11-23 16:09:00,064 INFO L226 Difference]: Without dead ends: 563 [2022-11-23 16:09:00,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 243.8s TimeCoverageRelationStatistics Valid=248, Invalid=3912, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 16:09:00,067 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 275 mSDsluCounter, 4477 mSDsCounter, 0 mSdLazyCounter, 5848 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 4695 SdHoareTripleChecker+Invalid, 5883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 5848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:09:00,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 4695 Invalid, 5883 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [35 Valid, 5848 Invalid, 0 Unknown, 0 Unchecked, 25.7s Time] [2022-11-23 16:09:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-11-23 16:09:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 446. [2022-11-23 16:09:00,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 329 states have (on average 1.5167173252279635) internal successors, (499), 335 states have internal predecessors, (499), 93 states have call successors, (93), 24 states have call predecessors, (93), 23 states have return successors, (93), 88 states have call predecessors, (93), 92 states have call successors, (93) [2022-11-23 16:09:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 685 transitions. [2022-11-23 16:09:00,339 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 685 transitions. Word has length 82 [2022-11-23 16:09:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:09:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 685 transitions. [2022-11-23 16:09:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 32 states have (on average 1.3125) internal successors, (42), 30 states have internal predecessors, (42), 15 states have call successors, (17), 8 states have call predecessors, (17), 6 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-23 16:09:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 685 transitions. [2022-11-23 16:09:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 16:09:00,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:09:00,343 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:09:00,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 16:09:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:00,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:09:00,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:09:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1312992808, now seen corresponding path program 1 times [2022-11-23 16:09:00,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:09:00,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6004866] [2022-11-23 16:09:00,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:00,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:09:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:00,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 16:09:00,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:09:00,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6004866] [2022-11-23 16:09:00,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6004866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:09:00,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042553914] [2022-11-23 16:09:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:09:00,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:09:00,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:09:00,712 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:09:00,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:09:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:09:01,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 16:09:01,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:09:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 16:09:01,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:09:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 16:09:01,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042553914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:09:01,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671561402] [2022-11-23 16:09:01,129 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-23 16:09:01,129 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:09:01,130 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:09:01,130 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:09:01,130 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:09:46,377 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 16:09:46,665 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-23 16:09:46,735 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-23 16:09:46,800 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 237 for LOIs [2022-11-23 16:09:46,878 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 16:09:47,162 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:10:15,420 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 468 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:27,338 WARN L233 SmtUtils]: Spent 6.57s on a formula simplification. DAG size of input: 490 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:10:59,618 WARN L233 SmtUtils]: Spent 20.80s on a formula simplification. DAG size of input: 636 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:20,350 WARN L233 SmtUtils]: Spent 20.33s on a formula simplification. DAG size of input: 638 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:25,763 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 547 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:31,183 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 549 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:11:43,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1671561402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:43,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:11:43,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-23 16:11:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856646214] [2022-11-23 16:11:43,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:43,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 16:11:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:43,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 16:11:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 16:11:43,700 INFO L87 Difference]: Start difference. First operand 446 states and 685 transitions. Second operand has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 16:11:54,707 WARN L233 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 626 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:04,399 WARN L233 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 626 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 16:12:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:12:17,327 INFO L93 Difference]: Finished difference Result 871 states and 1382 transitions. [2022-11-23 16:12:17,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 16:12:17,328 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 85 [2022-11-23 16:12:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:12:17,332 INFO L225 Difference]: With dead ends: 871 [2022-11-23 16:12:17,332 INFO L226 Difference]: Without dead ends: 605 [2022-11-23 16:12:17,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 135.1s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 16:12:17,335 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 116 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 3131 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-23 16:12:17,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 3251 Invalid, 3146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 3131 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-11-23 16:12:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-23 16:12:17,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 531. [2022-11-23 16:12:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 406 states have (on average 1.5369458128078817) internal successors, (624), 414 states have internal predecessors, (624), 98 states have call successors, (98), 27 states have call predecessors, (98), 26 states have return successors, (98), 91 states have call predecessors, (98), 97 states have call successors, (98) [2022-11-23 16:12:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 820 transitions. [2022-11-23 16:12:17,701 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 820 transitions. Word has length 85 [2022-11-23 16:12:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:17,702 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 820 transitions. [2022-11-23 16:12:17,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 10 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2022-11-23 16:12:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 820 transitions. [2022-11-23 16:12:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 16:12:17,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:17,706 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:17,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:12:17,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:17,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 16:12:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:17,914 INFO L85 PathProgramCache]: Analyzing trace with hash -770435254, now seen corresponding path program 1 times [2022-11-23 16:12:17,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:12:17,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282892391] [2022-11-23 16:12:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:17,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:12:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:12:18,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:12:18,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282892391] [2022-11-23 16:12:18,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282892391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:12:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648258420] [2022-11-23 16:12:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:18,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:12:18,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:12:18,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:12:18,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bfc0fe6-4f8d-4745-9ce5-5c9abe5d9a90/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:12:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:19,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1006 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 16:12:19,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:12:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:12:19,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:12:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 16:12:19,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648258420] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:12:19,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1310657641] [2022-11-23 16:12:19,308 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-23 16:12:19,310 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:12:19,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:12:19,313 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:12:19,313 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs