./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS --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 c4f282cd51b7c35fd32c34f82b9fbd91d93e4244798e2a2790fa24fbe3843942 --- 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-8393723 [2022-11-19 07:35:00,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:35:00,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:35:00,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:35:00,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:35:00,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:35:00,311 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:35:00,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:35:00,315 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:35:00,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:35:00,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:35:00,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:35:00,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:35:00,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:35:00,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:35:00,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:35:00,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:35:00,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:35:00,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:35:00,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:35:00,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:35:00,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:35:00,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:35:00,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:35:00,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:35:00,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:35:00,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:35:00,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:35:00,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:35:00,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:35:00,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:35:00,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:35:00,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:35:00,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:35:00,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:35:00,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:35:00,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:35:00,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:35:00,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:35:00,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:35:00,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:35:00,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:35:00,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:35:00,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:35:00,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:35:00,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:35:00,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:35:00,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:35:00,385 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:35:00,385 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:35:00,386 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:35:00,386 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:35:00,386 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:35:00,387 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:35:00,387 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:35:00,387 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:35:00,388 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:35:00,388 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:35:00,388 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:35:00,389 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:35:00,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:35:00,390 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:35:00,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:35:00,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:35:00,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:35:00,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:35:00,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:35:00,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:35:00,392 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:35:00,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:35:00,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:35:00,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:35:00,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:35:00,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:35:00,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:00,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:35:00,395 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:35:00,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:35:00,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:35:00,396 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:35:00,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:35:00,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:35:00,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:35:00,398 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_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4f282cd51b7c35fd32c34f82b9fbd91d93e4244798e2a2790fa24fbe3843942 [2022-11-19 07:35:00,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:35:00,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:35:00,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:35:00,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:35:00,738 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:35:00,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec1_product35.cil.c [2022-11-19 07:35:00,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/data/05720bd11/185df4112c1949cabf301c0542cda90e/FLAG07c60da68 [2022-11-19 07:35:01,565 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:35:01,566 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/sv-benchmarks/c/product-lines/email_spec1_product35.cil.c [2022-11-19 07:35:01,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/data/05720bd11/185df4112c1949cabf301c0542cda90e/FLAG07c60da68 [2022-11-19 07:35:01,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/data/05720bd11/185df4112c1949cabf301c0542cda90e [2022-11-19 07:35:01,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:35:01,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:35:01,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:01,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:35:01,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:35:01,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:01" (1/1) ... [2022-11-19 07:35:01,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ef0af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:01, skipping insertion in model container [2022-11-19 07:35:01,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:01" (1/1) ... [2022-11-19 07:35:01,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:35:01,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:35:02,696 WARN L234 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_cf44195b-0daf-47f7-b996-20682606a0f0/sv-benchmarks/c/product-lines/email_spec1_product35.cil.c[66161,66174] [2022-11-19 07:35:02,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:02,712 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:35:02,817 WARN L234 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_cf44195b-0daf-47f7-b996-20682606a0f0/sv-benchmarks/c/product-lines/email_spec1_product35.cil.c[66161,66174] [2022-11-19 07:35:02,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:35:02,853 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:35:02,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02 WrapperNode [2022-11-19 07:35:02,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:35:02,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:02,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:35:02,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:35:02,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:02,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,048 INFO L138 Inliner]: procedures = 137, calls = 247, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1148 [2022-11-19 07:35:03,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:35:03,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:35:03,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:35:03,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:35:03,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,110 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:35:03,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:35:03,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:35:03,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:35:03,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (1/1) ... [2022-11-19 07:35:03,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:35:03,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:03,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:35:03,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:35:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:35:03,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:35:03,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:35:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:35:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:35:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:35:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:35:03,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:35:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:35:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:35:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:35:03,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:35:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:35:03,223 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:35:03,223 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:35:03,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:35:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:35:03,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:35:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:35:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:35:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:35:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:35:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:35:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:35:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:35:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:35:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:35:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:35:03,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:35:03,226 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-19 07:35:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-19 07:35:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:35:03,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:35:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:35:03,227 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:35:03,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:35:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:35:03,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:35:03,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:35:03,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:35:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:35:03,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:35:03,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:35:03,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:35:03,230 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:35:03,231 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:35:03,232 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:35:03,232 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:35:03,233 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:35:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:35:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:35:03,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:35:03,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:35:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:35:03,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:35:03,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:35:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:35:03,238 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:35:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:35:03,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:35:03,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:35:03,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:35:03,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:35:03,580 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:35:03,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:35:04,886 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:35:05,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:35:05,683 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:35:05,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:05 BoogieIcfgContainer [2022-11-19 07:35:05,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:35:05,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:35:05,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:35:05,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:35:05,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:01" (1/3) ... [2022-11-19 07:35:05,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0c4240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:05, skipping insertion in model container [2022-11-19 07:35:05,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:02" (2/3) ... [2022-11-19 07:35:05,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0c4240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:05, skipping insertion in model container [2022-11-19 07:35:05,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:05" (3/3) ... [2022-11-19 07:35:05,696 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product35.cil.c [2022-11-19 07:35:05,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:35:05,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:35:05,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:35:05,784 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;@4c3bcedd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:35:05,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:35:05,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-19 07:35:05,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:35:05,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:05,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:05,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1350226867, now seen corresponding path program 1 times [2022-11-19 07:35:05,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:05,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710707506] [2022-11-19 07:35:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:05,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:35:06,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:06,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710707506] [2022-11-19 07:35:06,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710707506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:06,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:06,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:35:06,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708656941] [2022-11-19 07:35:06,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:35:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:06,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:35:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:35:06,325 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:35:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:06,498 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2022-11-19 07:35:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:35:06,501 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 71 [2022-11-19 07:35:06,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:06,515 INFO L225 Difference]: With dead ends: 392 [2022-11-19 07:35:06,516 INFO L226 Difference]: Without dead ends: 239 [2022-11-19 07:35:06,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:35:06,526 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:06,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:35:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-19 07:35:06,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-19 07:35:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-19 07:35:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2022-11-19 07:35:06,599 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 71 [2022-11-19 07:35:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:06,601 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2022-11-19 07:35:06,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:35:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2022-11-19 07:35:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:35:06,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:06,607 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:06,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:35:06,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash -585574988, now seen corresponding path program 1 times [2022-11-19 07:35:06,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:06,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509156930] [2022-11-19 07:35:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:06,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:35:06,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:06,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509156930] [2022-11-19 07:35:06,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509156930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:06,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:06,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:06,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156514636] [2022-11-19 07:35:06,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:06,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:06,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:06,908 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:35:07,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:07,097 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2022-11-19 07:35:07,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:07,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 72 [2022-11-19 07:35:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:07,111 INFO L225 Difference]: With dead ends: 388 [2022-11-19 07:35:07,113 INFO L226 Difference]: Without dead ends: 241 [2022-11-19 07:35:07,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:07,118 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:07,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:35:07,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-19 07:35:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-19 07:35:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-19 07:35:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2022-11-19 07:35:07,170 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 72 [2022-11-19 07:35:07,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:07,171 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2022-11-19 07:35:07,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:35:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2022-11-19 07:35:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:35:07,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:07,181 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:07,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:35:07,183 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -733935069, now seen corresponding path program 1 times [2022-11-19 07:35:07,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:07,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139742116] [2022-11-19 07:35:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:07,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:35:07,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:07,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139742116] [2022-11-19 07:35:07,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139742116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:07,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:07,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:35:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214721543] [2022-11-19 07:35:07,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:35:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:35:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:07,463 INFO L87 Difference]: Start difference. First operand 241 states and 320 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:35:07,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:07,699 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2022-11-19 07:35:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:07,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-19 07:35:07,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:07,703 INFO L225 Difference]: With dead ends: 517 [2022-11-19 07:35:07,703 INFO L226 Difference]: Without dead ends: 294 [2022-11-19 07:35:07,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:07,705 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 59 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:07,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 558 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:35:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-19 07:35:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2022-11-19 07:35:07,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-19 07:35:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2022-11-19 07:35:07,729 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 77 [2022-11-19 07:35:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:07,730 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2022-11-19 07:35:07,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-19 07:35:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2022-11-19 07:35:07,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 07:35:07,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:07,732 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:07,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:35:07,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1074708616, now seen corresponding path program 1 times [2022-11-19 07:35:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:07,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87911574] [2022-11-19 07:35:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:35:07,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87911574] [2022-11-19 07:35:07,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87911574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:35:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84930463] [2022-11-19 07:35:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:07,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:35:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:07,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:35:07,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:35:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:08,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:35:08,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:35:08,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:35:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:35:08,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84930463] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:35:08,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1354692509] [2022-11-19 07:35:08,609 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-19 07:35:08,609 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:35:08,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:35:08,619 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:35:08,619 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:35:50,545 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-19 07:35:50,879 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 273 for LOIs [2022-11-19 07:35:53,401 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-19 07:35:53,447 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:35:53,783 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-19 07:35:57,824 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 231 for LOIs [2022-11-19 07:35:57,869 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 283 for LOIs [2022-11-19 07:36:04,399 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 253 for LOIs [2022-11-19 07:36:04,486 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 250 for LOIs [2022-11-19 07:36:04,537 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-19 07:36:10,464 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 258 for LOIs [2022-11-19 07:36:10,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:36:40,063 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 468 DAG size of output: 277 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:54,910 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 502 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:04,436 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:25,382 WARN L233 SmtUtils]: Spent 20.63s on a formula simplification. DAG size of input: 591 DAG size of output: 466 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:36,039 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 567 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:41,509 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 563 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:52,567 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:59,890 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 499 DAG size of output: 289 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:39,669 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 475 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:45,759 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 477 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:00,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1354692509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:00,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:39:00,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-19 07:39:00,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723380133] [2022-11-19 07:39:00,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:00,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-19 07:39:00,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:00,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-19 07:39:00,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=3272, Unknown=0, NotChecked=0, Total=3422 [2022-11-19 07:39:00,175 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:39:14,884 WARN L233 SmtUtils]: Spent 11.10s on a formula simplification. DAG size of input: 479 DAG size of output: 438 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:20,969 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 509 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:27,084 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 511 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:33,191 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 507 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:39,669 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 517 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:50,854 WARN L233 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 577 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:40:02,743 WARN L233 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 590 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:41:04,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:04,094 INFO L93 Difference]: Finished difference Result 724 states and 1076 transitions. [2022-11-19 07:41:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-19 07:41:04,094 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 78 [2022-11-19 07:41:04,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:04,098 INFO L225 Difference]: With dead ends: 724 [2022-11-19 07:41:04,098 INFO L226 Difference]: Without dead ends: 453 [2022-11-19 07:41:04,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 248.1s TimeCoverageRelationStatistics Valid=243, Invalid=5013, Unknown=0, NotChecked=0, Total=5256 [2022-11-19 07:41:04,103 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 252 mSDsluCounter, 8055 mSDsCounter, 0 mSdLazyCounter, 10024 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 8366 SdHoareTripleChecker+Invalid, 10059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 10024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:04,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 8366 Invalid, 10059 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [35 Valid, 10024 Invalid, 0 Unknown, 0 Unchecked, 44.5s Time] [2022-11-19 07:41:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-19 07:41:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 372. [2022-11-19 07:41:04,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 236 states have (on average 1.3389830508474576) internal successors, (316), 240 states have internal predecessors, (316), 99 states have call successors, (99), 39 states have call predecessors, (99), 36 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-19 07:41:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 513 transitions. [2022-11-19 07:41:04,254 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 513 transitions. Word has length 78 [2022-11-19 07:41:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:04,255 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 513 transitions. [2022-11-19 07:41:04,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 12 states have call predecessors, (17), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:41:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 513 transitions. [2022-11-19 07:41:04,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:41:04,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:04,258 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:41:04,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:41:04,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:41:04,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:04,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:04,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1653731716, now seen corresponding path program 1 times [2022-11-19 07:41:04,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:04,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885589931] [2022-11-19 07:41:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:04,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:04,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:04,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885589931] [2022-11-19 07:41:04,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885589931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:41:04,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:41:04,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:41:04,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484370776] [2022-11-19 07:41:04,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:41:04,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:41:04,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:41:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:41:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:41:04,603 INFO L87 Difference]: Start difference. First operand 372 states and 513 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:41:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:41:05,018 INFO L93 Difference]: Finished difference Result 821 states and 1167 transitions. [2022-11-19 07:41:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:41:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-19 07:41:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:41:05,022 INFO L225 Difference]: With dead ends: 821 [2022-11-19 07:41:05,022 INFO L226 Difference]: Without dead ends: 496 [2022-11-19 07:41:05,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:41:05,025 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 57 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:41:05,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 575 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:41:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-19 07:41:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 489. [2022-11-19 07:41:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 322 states have (on average 1.3944099378881987) internal successors, (449), 326 states have internal predecessors, (449), 130 states have call successors, (130), 39 states have call predecessors, (130), 36 states have return successors, (129), 125 states have call predecessors, (129), 129 states have call successors, (129) [2022-11-19 07:41:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 708 transitions. [2022-11-19 07:41:05,222 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 708 transitions. Word has length 83 [2022-11-19 07:41:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:41:05,223 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 708 transitions. [2022-11-19 07:41:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:41:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 708 transitions. [2022-11-19 07:41:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 07:41:05,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:41:05,226 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:41:05,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:41:05,226 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:41:05,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:41:05,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1393507940, now seen corresponding path program 1 times [2022-11-19 07:41:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:41:05,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082465031] [2022-11-19 07:41:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:41:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:05,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:41:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082465031] [2022-11-19 07:41:05,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082465031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:41:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077128276] [2022-11-19 07:41:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:41:05,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:41:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:41:05,379 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:41:05,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:41:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:41:05,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:41:05,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:41:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:05,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:41:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:41:05,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077128276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:41:05,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566497526] [2022-11-19 07:41:05,833 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-19 07:41:05,834 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:41:05,834 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:41:05,834 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:41:05,835 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:42:00,232 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:42:00,575 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-19 07:42:00,902 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:42:14,792 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:20,118 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:49,616 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 502 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:42:59,887 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:16,236 WARN L233 SmtUtils]: Spent 16.01s on a formula simplification. DAG size of input: 583 DAG size of output: 398 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:32,255 WARN L233 SmtUtils]: Spent 7.07s on a formula simplification. DAG size of input: 553 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:40,721 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 584 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:40,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1566497526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:40,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:43:40,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-19 07:43:40,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14806768] [2022-11-19 07:43:40,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:40,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-19 07:43:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:40,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-19 07:43:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=752, Unknown=0, NotChecked=0, Total=870 [2022-11-19 07:43:40,946 INFO L87 Difference]: Start difference. First operand 489 states and 708 transitions. Second operand has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-19 07:43:53,332 WARN L233 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 508 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:43:59,720 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 513 DAG size of output: 349 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:05,897 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 519 DAG size of output: 355 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:12,433 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 515 DAG size of output: 351 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:18,958 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 521 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:25,419 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 517 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:32,240 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 522 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:38,741 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 462 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:44:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:46,819 INFO L93 Difference]: Finished difference Result 937 states and 1399 transitions. [2022-11-19 07:44:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-19 07:44:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 84 [2022-11-19 07:44:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:46,828 INFO L225 Difference]: With dead ends: 937 [2022-11-19 07:44:46,828 INFO L226 Difference]: Without dead ends: 566 [2022-11-19 07:44:46,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 155.1s TimeCoverageRelationStatistics Valid=208, Invalid=1198, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 07:44:46,832 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 161 mSDsluCounter, 3703 mSDsCounter, 0 mSdLazyCounter, 2116 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:46,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 3983 Invalid, 2134 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 2116 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2022-11-19 07:44:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-19 07:44:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 501. [2022-11-19 07:44:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 332 states have (on average 1.394578313253012) internal successors, (463), 336 states have internal predecessors, (463), 131 states have call successors, (131), 40 states have call predecessors, (131), 37 states have return successors, (130), 126 states have call predecessors, (130), 130 states have call successors, (130) [2022-11-19 07:44:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 724 transitions. [2022-11-19 07:44:47,242 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 724 transitions. Word has length 84 [2022-11-19 07:44:47,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:47,243 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 724 transitions. [2022-11-19 07:44:47,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-19 07:44:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 724 transitions. [2022-11-19 07:44:47,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:44:47,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:47,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:44:47,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:44:47,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:44:47,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:44:47,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:47,457 INFO L85 PathProgramCache]: Analyzing trace with hash 61968666, now seen corresponding path program 1 times [2022-11-19 07:44:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:47,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613909181] [2022-11-19 07:44:47,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:47,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:44:47,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613909181] [2022-11-19 07:44:47,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613909181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:44:47,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724934934] [2022-11-19 07:44:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:47,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:44:47,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:44:47,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:44:47,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:44:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:48,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:44:48,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:44:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:44:48,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:44:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:44:48,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724934934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:44:48,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1491781039] [2022-11-19 07:44:48,297 INFO L159 IcfgInterpreter]: Started Sifa with 76 locations of interest [2022-11-19 07:44:48,297 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:44:48,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:44:48,298 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:44:48,298 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:45:38,743 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:45:39,129 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-19 07:45:39,208 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 422 for LOIs [2022-11-19 07:45:39,573 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 222 for LOIs [2022-11-19 07:45:39,652 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-19 07:45:40,053 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:45:55,343 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:01,371 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:15,705 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 468 DAG size of output: 277 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:31,306 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 502 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:41,222 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 512 DAG size of output: 384 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:46:55,574 WARN L233 SmtUtils]: Spent 13.99s on a formula simplification. DAG size of input: 623 DAG size of output: 436 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:11,048 WARN L233 SmtUtils]: Spent 8.68s on a formula simplification. DAG size of input: 533 DAG size of output: 315 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:22,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1491781039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:22,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:47:22,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-19 07:47:22,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089424011] [2022-11-19 07:47:22,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:22,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-19 07:47:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:22,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-19 07:47:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:47:22,949 INFO L87 Difference]: Start difference. First operand 501 states and 724 transitions. Second operand has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-19 07:47:32,670 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 564 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:38,959 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 508 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:45,200 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 512 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:47:51,655 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 514 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:48:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:19,545 INFO L93 Difference]: Finished difference Result 958 states and 1430 transitions. [2022-11-19 07:48:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 07:48:19,548 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) Word has length 87 [2022-11-19 07:48:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:19,553 INFO L225 Difference]: With dead ends: 958 [2022-11-19 07:48:19,553 INFO L226 Difference]: Without dead ends: 587 [2022-11-19 07:48:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 139.1s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2022-11-19 07:48:19,556 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 133 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 4013 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 4031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:19,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 4616 Invalid, 4031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4013 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2022-11-19 07:48:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-19 07:48:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 537. [2022-11-19 07:48:19,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 362 states have (on average 1.3950276243093922) internal successors, (505), 366 states have internal predecessors, (505), 134 states have call successors, (134), 43 states have call predecessors, (134), 40 states have return successors, (133), 129 states have call predecessors, (133), 133 states have call successors, (133) [2022-11-19 07:48:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 772 transitions. [2022-11-19 07:48:19,979 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 772 transitions. Word has length 87 [2022-11-19 07:48:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:19,979 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 772 transitions. [2022-11-19 07:48:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 9 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (17), 10 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-19 07:48:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 772 transitions. [2022-11-19 07:48:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-19 07:48:19,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:19,983 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:19,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:48:20,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:20,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:48:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash 5529302, now seen corresponding path program 1 times [2022-11-19 07:48:20,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:20,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377862151] [2022-11-19 07:48:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:20,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:48:20,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:20,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377862151] [2022-11-19 07:48:20,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377862151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:48:20,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546580976] [2022-11-19 07:48:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:20,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:48:20,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:48:20,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:48:20,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf44195b-0daf-47f7-b996-20682606a0f0/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:48:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:20,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:48:20,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:48:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:48:20,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:48:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:48:20,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546580976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:48:20,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2016390964] [2022-11-19 07:48:20,951 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-19 07:48:20,952 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:48:20,953 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:48:20,953 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:48:20,953 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs