./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh --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 0a22b5b7c3f7f6e8ff7182918ba517a92e8c6204e4a486ab05fe09fb2404c376 --- 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-2329fc7 [2022-12-14 14:25:23,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:25:23,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:25:23,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:25:23,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:25:23,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:25:23,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:25:23,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:25:23,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:25:23,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:25:23,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:25:23,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:25:23,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:25:23,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:25:23,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:25:23,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:25:23,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:25:23,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:25:23,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:25:23,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:25:23,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:25:23,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:25:23,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:25:23,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:25:23,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:25:23,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:25:23,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:25:23,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:25:23,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:25:23,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:25:23,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:25:23,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:25:23,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:25:23,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:25:23,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:25:23,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:25:23,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:25:23,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:25:23,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:25:23,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:25:23,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:25:23,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:25:23,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:25:23,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:25:23,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:25:23,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:25:23,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:25:23,409 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:25:23,409 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:25:23,409 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:25:23,409 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:25:23,409 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:25:23,410 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:25:23,410 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:25:23,410 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:25:23,410 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:25:23,410 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:25:23,410 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:25:23,411 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:25:23,411 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:25:23,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:25:23,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:25:23,413 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:25:23,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:25:23,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:25:23,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:25:23,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:25:23,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:25:23,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:25:23,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:25:23,414 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:25:23,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:25:23,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:25:23,414 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:25:23,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:25:23,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:25:23,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:25:23,415 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_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a22b5b7c3f7f6e8ff7182918ba517a92e8c6204e4a486ab05fe09fb2404c376 [2022-12-14 14:25:23,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:25:23,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:25:23,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:25:23,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:25:23,627 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:25:23,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec0_product11.cil.c [2022-12-14 14:25:26,199 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:25:26,456 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:25:26,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c [2022-12-14 14:25:26,472 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/data/2174fe320/1b2c988677994a33b5e585d0d1991b23/FLAGb8e6a0bcb [2022-12-14 14:25:26,779 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/data/2174fe320/1b2c988677994a33b5e585d0d1991b23 [2022-12-14 14:25:26,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:25:26,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:25:26,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:25:26,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:25:26,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:25:26,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:25:26" (1/1) ... [2022-12-14 14:25:26,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d5fa69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:26, skipping insertion in model container [2022-12-14 14:25:26,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:25:26" (1/1) ... [2022-12-14 14:25:26,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:25:26,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:25:27,007 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,009 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,012 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,018 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,061 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,063 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,068 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,106 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_576f8b6f-eff8-413d-8e40-d525b5c44a1e/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c[59717,59730] [2022-12-14 14:25:27,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:25:27,120 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:25:27,143 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,144 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,147 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,150 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,167 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,167 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,170 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 14:25:27,189 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_576f8b6f-eff8-413d-8e40-d525b5c44a1e/sv-benchmarks/c/product-lines/email_spec0_product11.cil.c[59717,59730] [2022-12-14 14:25:27,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:25:27,208 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:25:27,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27 WrapperNode [2022-12-14 14:25:27,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:25:27,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:25:27,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:25:27,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:25:27,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,268 INFO L138 Inliner]: procedures = 121, calls = 176, calls flagged for inlining = 48, calls inlined = 43, statements flattened = 792 [2022-12-14 14:25:27,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:25:27,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:25:27,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:25:27,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:25:27,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:25:27,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:25:27,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:25:27,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:25:27,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (1/1) ... [2022-12-14 14:25:27,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:25:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:27,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:25:27,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:25:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 14:25:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 14:25:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 14:25:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 14:25:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 14:25:27,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 14:25:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 14:25:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 14:25:27,364 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 14:25:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 14:25:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 14:25:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 14:25:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 14:25:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:25:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 14:25:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 14:25:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:25:27,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:25:27,504 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:25:27,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:25:27,932 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:25:28,112 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:25:28,112 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:25:28,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:28 BoogieIcfgContainer [2022-12-14 14:25:28,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:25:28,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:25:28,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:25:28,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:25:28,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:25:26" (1/3) ... [2022-12-14 14:25:28,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1244b5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:25:28, skipping insertion in model container [2022-12-14 14:25:28,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:25:27" (2/3) ... [2022-12-14 14:25:28,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1244b5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:25:28, skipping insertion in model container [2022-12-14 14:25:28,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:25:28" (3/3) ... [2022-12-14 14:25:28,120 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product11.cil.c [2022-12-14 14:25:28,134 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:25:28,134 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:25:28,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:25:28,175 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;@f147b7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:25:28,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:25:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-12-14 14:25:28,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 14:25:28,197 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:28,197 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] [2022-12-14 14:25:28,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:28,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 748872305, now seen corresponding path program 1 times [2022-12-14 14:25:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:28,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288952090] [2022-12-14 14:25:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:28,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:28,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288952090] [2022-12-14 14:25:28,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288952090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:28,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:28,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:25:28,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445242359] [2022-12-14 14:25:28,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:28,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:25:28,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:28,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:25:28,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:25:28,437 INFO L87 Difference]: Start difference. First operand has 126 states, 76 states have (on average 1.381578947368421) internal successors, (105), 78 states have internal predecessors, (105), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 14:25:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:28,514 INFO L93 Difference]: Finished difference Result 169 states and 228 transitions. [2022-12-14 14:25:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:25:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2022-12-14 14:25:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:28,522 INFO L225 Difference]: With dead ends: 169 [2022-12-14 14:25:28,522 INFO L226 Difference]: Without dead ends: 123 [2022-12-14 14:25:28,524 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 [2022-12-14 14:25:28,527 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:28,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-14 14:25:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2022-12-14 14:25:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.337837837837838) internal successors, (99), 75 states have internal predecessors, (99), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-12-14 14:25:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 168 transitions. [2022-12-14 14:25:28,561 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 168 transitions. Word has length 58 [2022-12-14 14:25:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:28,562 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 168 transitions. [2022-12-14 14:25:28,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 14:25:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 168 transitions. [2022-12-14 14:25:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 14:25:28,565 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:28,565 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:25:28,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:25:28,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1320841895, now seen corresponding path program 1 times [2022-12-14 14:25:28,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:28,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750177421] [2022-12-14 14:25:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:28,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:28,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:28,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750177421] [2022-12-14 14:25:28,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750177421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:28,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:28,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:25:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876859329] [2022-12-14 14:25:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:25:28,700 INFO L87 Difference]: Start difference. First operand 123 states and 168 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 14:25:28,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:28,780 INFO L93 Difference]: Finished difference Result 165 states and 216 transitions. [2022-12-14 14:25:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:28,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2022-12-14 14:25:28,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:28,782 INFO L225 Difference]: With dead ends: 165 [2022-12-14 14:25:28,782 INFO L226 Difference]: Without dead ends: 125 [2022-12-14 14:25:28,783 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 [2022-12-14 14:25:28,784 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:28,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:25:28,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-14 14:25:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-12-14 14:25:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 77 states have internal predecessors, (101), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-12-14 14:25:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 170 transitions. [2022-12-14 14:25:28,795 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 170 transitions. Word has length 59 [2022-12-14 14:25:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:28,795 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 170 transitions. [2022-12-14 14:25:28,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 14:25:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 170 transitions. [2022-12-14 14:25:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:25:28,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:28,798 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] [2022-12-14 14:25:28,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:25:28,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash 593597867, now seen corresponding path program 1 times [2022-12-14 14:25:28,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:28,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521152646] [2022-12-14 14:25:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:28,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:28,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:28,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:28,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521152646] [2022-12-14 14:25:28,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521152646] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:25:28,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:25:28,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:25:28,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132443051] [2022-12-14 14:25:28,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:25:28,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:25:28,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:25:28,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:25:28,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:25:28,885 INFO L87 Difference]: Start difference. First operand 125 states and 170 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 14:25:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:25:28,951 INFO L93 Difference]: Finished difference Result 280 states and 399 transitions. [2022-12-14 14:25:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:25:28,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-12-14 14:25:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:25:28,952 INFO L225 Difference]: With dead ends: 280 [2022-12-14 14:25:28,952 INFO L226 Difference]: Without dead ends: 173 [2022-12-14 14:25:28,953 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 [2022-12-14 14:25:28,954 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 57 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:25:28,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 303 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:25:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-14 14:25:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2022-12-14 14:25:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 109 states have internal predecessors, (154), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-12-14 14:25:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 245 transitions. [2022-12-14 14:25:28,966 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 245 transitions. Word has length 64 [2022-12-14 14:25:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:25:28,966 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 245 transitions. [2022-12-14 14:25:28,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 14:25:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 245 transitions. [2022-12-14 14:25:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:25:28,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:25:28,968 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] [2022-12-14 14:25:28,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:25:28,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:25:28,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:25:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash -511204564, now seen corresponding path program 1 times [2022-12-14 14:25:28,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:25:28,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231162214] [2022-12-14 14:25:28,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:25:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:29,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:25:29,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231162214] [2022-12-14 14:25:29,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231162214] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:25:29,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238318576] [2022-12-14 14:25:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:25:29,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:25:29,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:25:29,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:25:29,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:25:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:25:29,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:25:29,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:25:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:29,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:25:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:25:29,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238318576] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:25:29,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [376145288] [2022-12-14 14:25:29,394 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 14:25:29,394 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:25:29,397 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:25:29,401 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:25:29,401 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:25:56,989 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 14:25:57,270 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:25:57,548 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 460 for LOIs [2022-12-14 14:26:18,915 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 458 for LOIs [2022-12-14 14:26:23,908 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 237 for LOIs [2022-12-14 14:26:23,942 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 234 for LOIs [2022-12-14 14:26:24,035 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 14:26:24,313 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:27:50,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [376145288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:27:50,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:27:50,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 45 [2022-12-14 14:27:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419408403] [2022-12-14 14:27:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:27:50,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-14 14:27:50,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:50,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-14 14:27:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1850, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 14:27:50,344 INFO L87 Difference]: Start difference. First operand 168 states and 245 transitions. Second operand has 40 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 25 states have internal predecessors, (32), 13 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-14 14:28:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:08,340 INFO L93 Difference]: Finished difference Result 437 states and 681 transitions. [2022-12-14 14:28:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 14:28:08,341 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 25 states have internal predecessors, (32), 13 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 65 [2022-12-14 14:28:08,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:08,346 INFO L225 Difference]: With dead ends: 437 [2022-12-14 14:28:08,346 INFO L226 Difference]: Without dead ends: 287 [2022-12-14 14:28:08,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 93.1s TimeCoverageRelationStatistics Valid=169, Invalid=2183, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 14:28:08,350 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 169 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 4022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:08,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 3524 Invalid, 4022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-12-14 14:28:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-14 14:28:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 238. [2022-12-14 14:28:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 167 states have (on average 1.4790419161676647) internal successors, (247), 169 states have internal predecessors, (247), 52 states have call successors, (52), 19 states have call predecessors, (52), 18 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-12-14 14:28:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 350 transitions. [2022-12-14 14:28:08,457 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 350 transitions. Word has length 65 [2022-12-14 14:28:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:08,457 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 350 transitions. [2022-12-14 14:28:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 25 states have internal predecessors, (32), 13 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-14 14:28:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 350 transitions. [2022-12-14 14:28:08,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 14:28:08,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:08,459 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] [2022-12-14 14:28:08,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:28:08,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:08,661 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:08,662 INFO L85 PathProgramCache]: Analyzing trace with hash -914301731, now seen corresponding path program 1 times [2022-12-14 14:28:08,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:08,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702153662] [2022-12-14 14:28:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:28:08,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:08,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702153662] [2022-12-14 14:28:08,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702153662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:28:08,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:28:08,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:28:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464674492] [2022-12-14 14:28:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:28:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:28:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:28:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:28:08,773 INFO L87 Difference]: Start difference. First operand 238 states and 350 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:28:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:09,019 INFO L93 Difference]: Finished difference Result 590 states and 906 transitions. [2022-12-14 14:28:09,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:28:09,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-12-14 14:28:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:09,022 INFO L225 Difference]: With dead ends: 590 [2022-12-14 14:28:09,022 INFO L226 Difference]: Without dead ends: 378 [2022-12-14 14:28:09,023 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 [2022-12-14 14:28:09,024 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 55 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:09,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 320 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:28:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-14 14:28:09,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 371. [2022-12-14 14:28:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 275 states have (on average 1.5418181818181818) internal successors, (424), 277 states have internal predecessors, (424), 77 states have call successors, (77), 19 states have call predecessors, (77), 18 states have return successors, (76), 74 states have call predecessors, (76), 76 states have call successors, (76) [2022-12-14 14:28:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 577 transitions. [2022-12-14 14:28:09,166 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 577 transitions. Word has length 70 [2022-12-14 14:28:09,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:09,166 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 577 transitions. [2022-12-14 14:28:09,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-14 14:28:09,167 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 577 transitions. [2022-12-14 14:28:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 14:28:09,168 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:09,168 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] [2022-12-14 14:28:09,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:28:09,168 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 625737275, now seen corresponding path program 1 times [2022-12-14 14:28:09,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:09,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364469748] [2022-12-14 14:28:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:09,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:28:09,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:09,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364469748] [2022-12-14 14:28:09,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364469748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:09,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223923030] [2022-12-14 14:28:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:09,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:09,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:09,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:28:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:09,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:28:09,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:28:09,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:28:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:28:09,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223923030] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:28:09,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1773276436] [2022-12-14 14:28:09,491 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 14:28:09,491 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:28:09,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:28:09,492 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:28:09,492 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:28:42,302 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:28:42,583 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 442 for LOIs [2022-12-14 14:28:42,864 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:29:19,650 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 583 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:29:33,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1773276436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:29:33,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:29:33,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-12-14 14:29:33,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148975416] [2022-12-14 14:29:33,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:29:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 14:29:33,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:29:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 14:29:33,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2022-12-14 14:29:33,327 INFO L87 Difference]: Start difference. First operand 371 states and 577 transitions. Second operand has 25 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 14:29:49,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:49,967 INFO L93 Difference]: Finished difference Result 759 states and 1225 transitions. [2022-12-14 14:29:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 14:29:49,967 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 71 [2022-12-14 14:29:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:49,969 INFO L225 Difference]: With dead ends: 759 [2022-12-14 14:29:49,969 INFO L226 Difference]: Without dead ends: 519 [2022-12-14 14:29:49,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 61.4s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 14:29:49,971 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 153 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:49,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2058 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-14 14:29:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-12-14 14:29:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 448. [2022-12-14 14:29:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 348 states have (on average 1.5660919540229885) internal successors, (545), 352 states have internal predecessors, (545), 80 states have call successors, (80), 20 states have call predecessors, (80), 19 states have return successors, (79), 75 states have call predecessors, (79), 79 states have call successors, (79) [2022-12-14 14:29:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 704 transitions. [2022-12-14 14:29:50,175 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 704 transitions. Word has length 71 [2022-12-14 14:29:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:50,175 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 704 transitions. [2022-12-14 14:29:50,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-12-14 14:29:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 704 transitions. [2022-12-14 14:29:50,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 14:29:50,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:50,177 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] [2022-12-14 14:29:50,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:29:50,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:50,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:29:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash 250690034, now seen corresponding path program 1 times [2022-12-14 14:29:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:29:50,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159724829] [2022-12-14 14:29:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:50,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:29:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:29:50,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:29:50,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159724829] [2022-12-14 14:29:50,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159724829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:50,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275719620] [2022-12-14 14:29:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:50,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:50,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:29:50,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:29:50,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:29:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:50,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:29:50,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:29:50,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:29:50,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275719620] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:29:50,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1900747906] [2022-12-14 14:29:50,781 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-12-14 14:29:50,782 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:29:50,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:29:50,782 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:29:50,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:30:22,873 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 14:30:23,151 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 234 for LOIs [2022-12-14 14:30:23,210 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 249 for LOIs [2022-12-14 14:30:23,285 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:30:23,571 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 243 for LOIs [2022-12-14 14:30:23,642 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:31:01,497 WARN L233 SmtUtils]: Spent 7.83s on a formula simplification. DAG size of input: 623 DAG size of output: 421 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:31:14,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1900747906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:31:14,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:31:14,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-12-14 14:31:14,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495559223] [2022-12-14 14:31:14,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:31:14,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-14 14:31:14,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:31:14,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-14 14:31:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 14:31:14,836 INFO L87 Difference]: Start difference. First operand 448 states and 704 transitions. Second operand has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-12-14 14:31:27,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:31:27,005 INFO L93 Difference]: Finished difference Result 847 states and 1368 transitions. [2022-12-14 14:31:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 14:31:27,006 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 74 [2022-12-14 14:31:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:31:27,008 INFO L225 Difference]: With dead ends: 847 [2022-12-14 14:31:27,009 INFO L226 Difference]: Without dead ends: 607 [2022-12-14 14:31:27,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 14:31:27,010 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 138 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 2781 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 2791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:31:27,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2686 Invalid, 2791 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2781 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-12-14 14:31:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-12-14 14:31:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 533. [2022-12-14 14:31:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 425 states have (on average 1.576470588235294) internal successors, (670), 431 states have internal predecessors, (670), 85 states have call successors, (85), 23 states have call predecessors, (85), 22 states have return successors, (84), 78 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-14 14:31:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 839 transitions. [2022-12-14 14:31:27,315 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 839 transitions. Word has length 74 [2022-12-14 14:31:27,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:31:27,315 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 839 transitions. [2022-12-14 14:31:27,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 18 states have internal predecessors, (35), 10 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-12-14 14:31:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 839 transitions. [2022-12-14 14:31:27,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 14:31:27,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:31:27,317 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] [2022-12-14 14:31:27,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:31:27,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:31:27,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:31:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:31:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1946211867, now seen corresponding path program 1 times [2022-12-14 14:31:27,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:31:27,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777070364] [2022-12-14 14:31:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:31:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:31:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:31:27,593 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:31:27,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:31:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777070364] [2022-12-14 14:31:27,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777070364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:31:27,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102328363] [2022-12-14 14:31:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:31:27,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:31:27,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:31:27,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:31:27,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:31:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:31:27,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:31:27,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:31:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:31:27,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:31:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 14:31:27,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102328363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:31:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [266750672] [2022-12-14 14:31:27,851 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-12-14 14:31:27,851 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:31:27,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:31:27,851 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:31:27,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:32:09,090 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:32:09,360 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:32:09,636 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 456 for LOIs [2022-12-14 14:32:29,507 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 454 for LOIs [2022-12-14 14:32:36,394 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 240 for LOIs [2022-12-14 14:32:36,423 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-12-14 14:32:36,458 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 236 for LOIs [2022-12-14 14:32:36,554 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 444 for LOIs [2022-12-14 14:32:37,138 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:33:40,533 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 565 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:34:05,143 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 562 DAG size of output: 417 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 14:34:43,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [266750672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:34:43,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:34:43,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-12-14 14:34:43,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210586364] [2022-12-14 14:34:43,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:34:43,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-14 14:34:43,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:34:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-14 14:34:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=3309, Unknown=0, NotChecked=0, Total=3540 [2022-12-14 14:34:43,526 INFO L87 Difference]: Start difference. First operand 533 states and 839 transitions. Second operand has 55 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 37 states have internal predecessors, (40), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 14:36:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:36:00,340 INFO L93 Difference]: Finished difference Result 898 states and 1427 transitions. [2022-12-14 14:36:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 14:36:00,341 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 37 states have internal predecessors, (40), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 73 [2022-12-14 14:36:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:36:00,343 INFO L225 Difference]: With dead ends: 898 [2022-12-14 14:36:00,343 INFO L226 Difference]: Without dead ends: 658 [2022-12-14 14:36:00,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1662 ImplicationChecksByTransitivity, 189.8s TimeCoverageRelationStatistics Valid=720, Invalid=6420, Unknown=0, NotChecked=0, Total=7140 [2022-12-14 14:36:00,345 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 275 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 4662 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 4682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 4662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:36:00,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2879 Invalid, 4682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 4662 Invalid, 0 Unknown, 0 Unchecked, 12.6s Time] [2022-12-14 14:36:00,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-12-14 14:36:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 591. [2022-12-14 14:36:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 470 states have (on average 1.5574468085106383) internal successors, (732), 477 states have internal predecessors, (732), 93 states have call successors, (93), 29 states have call predecessors, (93), 27 states have return successors, (93), 84 states have call predecessors, (93), 92 states have call successors, (93) [2022-12-14 14:36:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 918 transitions. [2022-12-14 14:36:00,713 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 918 transitions. Word has length 73 [2022-12-14 14:36:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:36:00,714 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 918 transitions. [2022-12-14 14:36:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 37 states have internal predecessors, (40), 14 states have call successors, (14), 8 states have call predecessors, (14), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-14 14:36:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 918 transitions. [2022-12-14 14:36:00,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 14:36:00,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:36:00,715 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-12-14 14:36:00,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 14:36:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 14:36:00,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:36:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:36:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash 524512904, now seen corresponding path program 1 times [2022-12-14 14:36:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:36:00,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303701153] [2022-12-14 14:36:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:36:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:36:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:36:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:36:01,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:36:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303701153] [2022-12-14 14:36:01,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303701153] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:36:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401920647] [2022-12-14 14:36:01,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:36:01,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:36:01,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:36:01,025 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:36:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:36:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:36:01,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 14:36:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:36:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-14 14:36:01,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:36:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:36:01,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401920647] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:36:01,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [640362425] [2022-12-14 14:36:01,281 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-12-14 14:36:01,281 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:36:01,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:36:01,282 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:36:01,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:36:47,543 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 14:36:47,819 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 14:36:48,095 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 460 for LOIs [2022-12-14 14:37:21,125 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 244 for LOIs [2022-12-14 14:37:23,834 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 229 for LOIs [2022-12-14 14:37:23,865 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 233 for LOIs [2022-12-14 14:37:23,898 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 450 for LOIs [2022-12-14 14:37:24,174 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:38:59,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [640362425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:38:59,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:38:59,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [4, 4, 4] total 49 [2022-12-14 14:38:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876210495] [2022-12-14 14:38:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:38:59,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 14:38:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:38:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 14:38:59,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2204, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 14:38:59,932 INFO L87 Difference]: Start difference. First operand 591 states and 918 transitions. Second operand has 44 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 28 states have internal predecessors, (37), 14 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 14:39:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:39:20,221 INFO L93 Difference]: Finished difference Result 669 states and 1033 transitions. [2022-12-14 14:39:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-14 14:39:20,221 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 28 states have internal predecessors, (37), 14 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 82 [2022-12-14 14:39:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:39:20,223 INFO L225 Difference]: With dead ends: 669 [2022-12-14 14:39:20,223 INFO L226 Difference]: Without dead ends: 632 [2022-12-14 14:39:20,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 106.3s TimeCoverageRelationStatistics Valid=204, Invalid=2766, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 14:39:20,224 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 203 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:39:20,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 2803 Invalid, 3280 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-12-14 14:39:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-12-14 14:39:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 593. [2022-12-14 14:39:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 471 states have (on average 1.5541401273885351) internal successors, (732), 478 states have internal predecessors, (732), 93 states have call successors, (93), 29 states have call predecessors, (93), 28 states have return successors, (93), 85 states have call predecessors, (93), 92 states have call successors, (93) [2022-12-14 14:39:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 918 transitions. [2022-12-14 14:39:20,640 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 918 transitions. Word has length 82 [2022-12-14 14:39:20,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:39:20,640 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 918 transitions. [2022-12-14 14:39:20,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 28 states have internal predecessors, (37), 14 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2022-12-14 14:39:20,640 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 918 transitions. [2022-12-14 14:39:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 14:39:20,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:39:20,642 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] [2022-12-14 14:39:20,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:39:20,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:39:20,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:39:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:39:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash 637203754, now seen corresponding path program 1 times [2022-12-14 14:39:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:39:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766387997] [2022-12-14 14:39:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:39:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:39:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:39:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-14 14:39:21,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:39:21,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766387997] [2022-12-14 14:39:21,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766387997] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:39:21,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74646938] [2022-12-14 14:39:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:39:21,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:39:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:39:21,008 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:39:21,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_576f8b6f-eff8-413d-8e40-d525b5c44a1e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:39:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:39:21,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 14:39:21,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:39:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:39:21,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:39:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 14:39:21,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74646938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:39:21,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [623388704] [2022-12-14 14:39:21,235 INFO L159 IcfgInterpreter]: Started Sifa with 56 locations of interest [2022-12-14 14:39:21,235 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:39:21,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:39:21,235 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:39:21,235 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs