./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI --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 fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 --- 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-5e519f3 [2022-11-03 01:44:37,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:44:37,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:44:37,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:44:37,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:44:37,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:44:37,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:44:37,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:44:37,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:44:37,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:44:37,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:44:37,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:44:37,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:44:37,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:44:37,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:44:37,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:44:37,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:44:37,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:44:37,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:44:37,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:44:37,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:44:37,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:44:37,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:44:37,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:44:37,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:44:37,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:44:37,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:44:37,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:44:37,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:44:37,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:44:37,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:44:37,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:44:37,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:44:37,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:44:37,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:44:37,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:44:37,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:44:37,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:44:37,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:44:37,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:44:37,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:44:37,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:44:37,346 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:44:37,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:44:37,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:44:37,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:44:37,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:44:37,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:44:37,350 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:44:37,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:44:37,350 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:44:37,350 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:44:37,352 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:44:37,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:44:37,352 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:44:37,353 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:44:37,353 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:44:37,353 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:44:37,353 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:44:37,354 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:44:37,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:44:37,355 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:44:37,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:44:37,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:44:37,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:44:37,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:44:37,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:44:37,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:44:37,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:44:37,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:44:37,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:44:37,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:44:37,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:44:37,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:44:37,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:44:37,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:44:37,359 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:44:37,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:44:37,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:44:37,360 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:44:37,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:44:37,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:44:37,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:44:37,361 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_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 [2022-11-03 01:44:37,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:44:37,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:44:37,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:44:37,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:44:37,817 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:44:37,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-11-03 01:44:37,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/data/a32b65d16/69b142efb7de44b9aa949965cea2846c/FLAGa387d7a27 [2022-11-03 01:44:38,707 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:44:38,708 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-11-03 01:44:38,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/data/a32b65d16/69b142efb7de44b9aa949965cea2846c/FLAGa387d7a27 [2022-11-03 01:44:38,906 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/data/a32b65d16/69b142efb7de44b9aa949965cea2846c [2022-11-03 01:44:38,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:44:38,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:44:38,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:44:38,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:44:38,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:44:38,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:44:38" (1/1) ... [2022-11-03 01:44:38,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec963b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:38, skipping insertion in model container [2022-11-03 01:44:38,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:44:38" (1/1) ... [2022-11-03 01:44:38,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:44:39,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:44:39,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-11-03 01:44:39,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:44:39,936 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:44:39,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-11-03 01:44:40,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:44:40,127 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:44:40,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40 WrapperNode [2022-11-03 01:44:40,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:44:40,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:44:40,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:44:40,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:44:40,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,260 INFO L138 Inliner]: procedures = 151, calls = 284, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1304 [2022-11-03 01:44:40,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:44:40,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:44:40,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:44:40,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:44:40,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:44:40,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:44:40,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:44:40,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:44:40,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (1/1) ... [2022-11-03 01:44:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:44:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:40,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:44:40,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:44:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 01:44:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 01:44:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-03 01:44:40,594 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-03 01:44:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-03 01:44:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-03 01:44:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 01:44:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 01:44:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:44:40,595 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:44:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 01:44:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 01:44:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:44:40,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:44:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-03 01:44:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-03 01:44:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:44:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:44:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-03 01:44:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-03 01:44:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:44:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:44:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:44:40,599 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:44:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:44:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:44:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-03 01:44:40,600 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-03 01:44:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-03 01:44:40,601 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-03 01:44:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:44:40,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:44:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 01:44:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 01:44:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:44:40,604 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:44:40,604 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:44:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-03 01:44:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-03 01:44:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:44:40,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:44:40,605 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-03 01:44:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-03 01:44:40,606 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:44:40,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:44:40,607 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-03 01:44:40,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-03 01:44:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:44:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 01:44:40,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 01:44:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 01:44:40,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 01:44:40,612 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-03 01:44:40,612 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-03 01:44:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-03 01:44:40,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-03 01:44:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-03 01:44:40,613 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-03 01:44:40,613 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 01:44:40,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 01:44:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:44:40,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:44:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:44:40,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:44:40,614 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:44:40,614 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:44:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-03 01:44:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-03 01:44:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 01:44:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 01:44:40,615 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:44:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:44:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:44:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:44:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-03 01:44:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-03 01:44:40,616 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-03 01:44:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-03 01:44:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:44:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:44:40,617 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:44:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:44:40,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:44:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:44:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:44:40,619 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-03 01:44:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-03 01:44:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-03 01:44:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-03 01:44:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 01:44:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 01:44:40,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:44:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:44:40,966 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:44:40,980 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:44:42,484 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:44:43,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:44:43,373 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:44:43,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:43 BoogieIcfgContainer [2022-11-03 01:44:43,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:44:43,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:44:43,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:44:43,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:44:43,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:44:38" (1/3) ... [2022-11-03 01:44:43,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781f055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:43, skipping insertion in model container [2022-11-03 01:44:43,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:44:40" (2/3) ... [2022-11-03 01:44:43,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781f055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:44:43, skipping insertion in model container [2022-11-03 01:44:43,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:44:43" (3/3) ... [2022-11-03 01:44:43,397 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_productSimulator.cil.c [2022-11-03 01:44:43,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:44:43,425 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:44:43,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:44:43,564 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;@50f9054, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:44:43,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:44:43,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-03 01:44:43,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 01:44:43,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:43,627 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:43,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2020671514, now seen corresponding path program 1 times [2022-11-03 01:44:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:43,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508061929] [2022-11-03 01:44:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 01:44:44,789 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:44,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508061929] [2022-11-03 01:44:44,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508061929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:44,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:44,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:44:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738433693] [2022-11-03 01:44:44,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:44,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:44:44,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:44:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:44:44,861 INFO L87 Difference]: Start difference. First operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:44:45,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:45,299 INFO L93 Difference]: Finished difference Result 742 states and 1022 transitions. [2022-11-03 01:44:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:44:45,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-11-03 01:44:45,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:45,333 INFO L225 Difference]: With dead ends: 742 [2022-11-03 01:44:45,333 INFO L226 Difference]: Without dead ends: 382 [2022-11-03 01:44:45,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:44:45,360 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 6 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:45,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1401 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:44:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-03 01:44:45,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-03 01:44:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 225 states have (on average 1.288888888888889) internal successors, (290), 244 states have internal predecessors, (290), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-03 01:44:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 513 transitions. [2022-11-03 01:44:45,510 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 513 transitions. Word has length 121 [2022-11-03 01:44:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:45,512 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 513 transitions. [2022-11-03 01:44:45,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 01:44:45,514 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 513 transitions. [2022-11-03 01:44:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-03 01:44:45,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:45,536 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:45,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:44:45,538 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash -484212045, now seen corresponding path program 1 times [2022-11-03 01:44:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:45,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655218818] [2022-11-03 01:44:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 01:44:45,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:45,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655218818] [2022-11-03 01:44:45,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655218818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:45,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:45,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:45,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244271526] [2022-11-03 01:44:45,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:45,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:45,854 INFO L87 Difference]: Start difference. First operand 382 states and 513 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 01:44:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:46,106 INFO L93 Difference]: Finished difference Result 735 states and 995 transitions. [2022-11-03 01:44:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:46,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 127 [2022-11-03 01:44:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:46,111 INFO L225 Difference]: With dead ends: 735 [2022-11-03 01:44:46,112 INFO L226 Difference]: Without dead ends: 382 [2022-11-03 01:44:46,114 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 [2022-11-03 01:44:46,116 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 478 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:46,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 470 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-03 01:44:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-03 01:44:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 243 states have internal predecessors, (288), 110 states have call successors, (110), 45 states have call predecessors, (110), 45 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-03 01:44:46,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2022-11-03 01:44:46,174 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 127 [2022-11-03 01:44:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:46,175 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2022-11-03 01:44:46,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 01:44:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2022-11-03 01:44:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-03 01:44:46,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:46,180 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:46,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:44:46,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2138652357, now seen corresponding path program 1 times [2022-11-03 01:44:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:46,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095078872] [2022-11-03 01:44:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:46,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 01:44:46,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095078872] [2022-11-03 01:44:46,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095078872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:46,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:46,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294015863] [2022-11-03 01:44:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:46,413 INFO L87 Difference]: Start difference. First operand 382 states and 507 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:44:46,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:46,739 INFO L93 Difference]: Finished difference Result 1076 states and 1451 transitions. [2022-11-03 01:44:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:46,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2022-11-03 01:44:46,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:46,750 INFO L225 Difference]: With dead ends: 1076 [2022-11-03 01:44:46,750 INFO L226 Difference]: Without dead ends: 723 [2022-11-03 01:44:46,754 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 [2022-11-03 01:44:46,764 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 479 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:46,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 986 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:44:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-03 01:44:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2022-11-03 01:44:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 426 states have (on average 1.272300469483568) internal successors, (542), 456 states have internal predecessors, (542), 205 states have call successors, (205), 89 states have call predecessors, (205), 89 states have return successors, (216), 202 states have call predecessors, (216), 203 states have call successors, (216) [2022-11-03 01:44:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 963 transitions. [2022-11-03 01:44:46,837 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 963 transitions. Word has length 140 [2022-11-03 01:44:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:46,837 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 963 transitions. [2022-11-03 01:44:46,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:44:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 963 transitions. [2022-11-03 01:44:46,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 01:44:46,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:46,843 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:46,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:44:46,843 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:46,844 INFO L85 PathProgramCache]: Analyzing trace with hash -935937360, now seen corresponding path program 1 times [2022-11-03 01:44:46,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:46,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989222831] [2022-11-03 01:44:46,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:46,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 01:44:47,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:47,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989222831] [2022-11-03 01:44:47,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989222831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:47,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:47,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745453535] [2022-11-03 01:44:47,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:47,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:47,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:47,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:47,017 INFO L87 Difference]: Start difference. First operand 721 states and 963 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:44:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:47,196 INFO L93 Difference]: Finished difference Result 723 states and 964 transitions. [2022-11-03 01:44:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:47,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-03 01:44:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:47,200 INFO L225 Difference]: With dead ends: 723 [2022-11-03 01:44:47,200 INFO L226 Difference]: Without dead ends: 382 [2022-11-03 01:44:47,201 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 [2022-11-03 01:44:47,203 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 459 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:47,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 473 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-03 01:44:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-03 01:44:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 242 states have internal predecessors, (285), 108 states have call successors, (108), 46 states have call predecessors, (108), 46 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-03 01:44:47,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 500 transitions. [2022-11-03 01:44:47,237 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 500 transitions. Word has length 146 [2022-11-03 01:44:47,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:47,237 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 500 transitions. [2022-11-03 01:44:47,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:44:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 500 transitions. [2022-11-03 01:44:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 01:44:47,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:47,241 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:47,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:44:47,242 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:47,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2062767192, now seen corresponding path program 1 times [2022-11-03 01:44:47,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:47,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669980994] [2022-11-03 01:44:47,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-03 01:44:47,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:47,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669980994] [2022-11-03 01:44:47,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669980994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:47,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:47,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:47,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762461413] [2022-11-03 01:44:47,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:47,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:47,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:47,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:47,368 INFO L87 Difference]: Start difference. First operand 382 states and 500 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:44:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:47,537 INFO L93 Difference]: Finished difference Result 725 states and 947 transitions. [2022-11-03 01:44:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-03 01:44:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:47,542 INFO L225 Difference]: With dead ends: 725 [2022-11-03 01:44:47,542 INFO L226 Difference]: Without dead ends: 385 [2022-11-03 01:44:47,544 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 [2022-11-03 01:44:47,545 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 442 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:47,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 458 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-03 01:44:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 379. [2022-11-03 01:44:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 237 states have internal predecessors, (274), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-03 01:44:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-11-03 01:44:47,588 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 146 [2022-11-03 01:44:47,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:47,589 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-11-03 01:44:47,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 01:44:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-11-03 01:44:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 01:44:47,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:47,594 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:47,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:44:47,594 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1683507357, now seen corresponding path program 1 times [2022-11-03 01:44:47,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:47,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305543732] [2022-11-03 01:44:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:47,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:44:47,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:47,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305543732] [2022-11-03 01:44:47,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305543732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:47,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:47,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529256432] [2022-11-03 01:44:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:47,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:47,839 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 01:44:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:48,025 INFO L93 Difference]: Finished difference Result 601 states and 760 transitions. [2022-11-03 01:44:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:48,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 163 [2022-11-03 01:44:48,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:48,030 INFO L225 Difference]: With dead ends: 601 [2022-11-03 01:44:48,030 INFO L226 Difference]: Without dead ends: 381 [2022-11-03 01:44:48,031 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 [2022-11-03 01:44:48,033 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:48,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 857 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-03 01:44:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-03 01:44:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 229 states have (on average 1.205240174672489) internal successors, (276), 239 states have internal predecessors, (276), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-03 01:44:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 485 transitions. [2022-11-03 01:44:48,073 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 485 transitions. Word has length 163 [2022-11-03 01:44:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:48,074 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 485 transitions. [2022-11-03 01:44:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 01:44:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 485 transitions. [2022-11-03 01:44:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 01:44:48,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:48,079 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:48,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:44:48,080 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:48,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1897140614, now seen corresponding path program 1 times [2022-11-03 01:44:48,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:48,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731519272] [2022-11-03 01:44:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:48,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:44:48,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:48,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731519272] [2022-11-03 01:44:48,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731519272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:48,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:44:48,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:44:48,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605579303] [2022-11-03 01:44:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:48,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:48,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:48,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:48,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:44:48,289 INFO L87 Difference]: Start difference. First operand 381 states and 485 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 01:44:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:48,488 INFO L93 Difference]: Finished difference Result 760 states and 993 transitions. [2022-11-03 01:44:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:48,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 168 [2022-11-03 01:44:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:48,492 INFO L225 Difference]: With dead ends: 760 [2022-11-03 01:44:48,493 INFO L226 Difference]: Without dead ends: 448 [2022-11-03 01:44:48,494 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 [2022-11-03 01:44:48,495 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 76 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:48,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 871 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:44:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-03 01:44:48,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2022-11-03 01:44:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 277 states have (on average 1.2490974729241877) internal successors, (346), 287 states have internal predecessors, (346), 119 states have call successors, (119), 46 states have call predecessors, (119), 46 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2022-11-03 01:44:48,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 583 transitions. [2022-11-03 01:44:48,539 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 583 transitions. Word has length 168 [2022-11-03 01:44:48,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:48,540 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 583 transitions. [2022-11-03 01:44:48,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 01:44:48,541 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 583 transitions. [2022-11-03 01:44:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 01:44:48,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:48,545 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:48,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:44:48,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1701849785, now seen corresponding path program 1 times [2022-11-03 01:44:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:48,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729239649] [2022-11-03 01:44:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:48,772 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:44:48,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:48,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729239649] [2022-11-03 01:44:48,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729239649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:48,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010467948] [2022-11-03 01:44:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:48,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:48,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:48,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:48,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:44:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:49,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:44:49,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:44:49,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:44:49,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010467948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:44:49,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:44:49,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 01:44:49,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638873444] [2022-11-03 01:44:49,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:44:49,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:44:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:44:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:44:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:44:49,575 INFO L87 Difference]: Start difference. First operand 443 states and 583 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 01:44:49,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:44:49,867 INFO L93 Difference]: Finished difference Result 1056 states and 1389 transitions. [2022-11-03 01:44:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:44:49,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 169 [2022-11-03 01:44:49,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:44:49,875 INFO L225 Difference]: With dead ends: 1056 [2022-11-03 01:44:49,875 INFO L226 Difference]: Without dead ends: 843 [2022-11-03 01:44:49,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:44:49,877 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 372 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:44:49,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 927 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:44:49,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-03 01:44:49,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-03 01:44:49,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 529 states have (on average 1.2495274102079394) internal successors, (661), 546 states have internal predecessors, (661), 222 states have call successors, (222), 89 states have call predecessors, (222), 89 states have return successors, (229), 218 states have call predecessors, (229), 220 states have call successors, (229) [2022-11-03 01:44:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1112 transitions. [2022-11-03 01:44:49,956 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1112 transitions. Word has length 169 [2022-11-03 01:44:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:44:49,957 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1112 transitions. [2022-11-03 01:44:49,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 01:44:49,958 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1112 transitions. [2022-11-03 01:44:49,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 01:44:49,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:44:49,963 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:44:50,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:44:50,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-03 01:44:50,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:44:50,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:44:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1165925271, now seen corresponding path program 1 times [2022-11-03 01:44:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:44:50,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678632830] [2022-11-03 01:44:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:50,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:44:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 01:44:50,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:44:50,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678632830] [2022-11-03 01:44:50,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678632830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:44:50,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509263185] [2022-11-03 01:44:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:44:50,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:44:50,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:44:50,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:44:50,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:44:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:44:50,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:44:50,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:44:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 01:44:51,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:44:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 01:44:51,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509263185] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:44:51,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1612556715] [2022-11-03 01:44:51,204 INFO L159 IcfgInterpreter]: Started Sifa with 139 locations of interest [2022-11-03 01:44:51,204 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:44:51,209 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:44:51,216 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:44:51,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:46:36,562 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-11-03 01:46:37,666 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-03 01:46:37,972 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-11-03 01:46:38,256 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-11-03 01:46:39,553 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-11-03 01:46:41,273 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-11-03 01:46:41,314 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-03 01:46:42,029 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-11-03 01:46:42,288 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 277 for LOIs [2022-11-03 01:46:43,726 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-11-03 01:46:43,764 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-11-03 01:46:43,934 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2022-11-03 01:46:44,107 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2022-11-03 01:46:46,542 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 273 for LOIs [2022-11-03 01:46:47,245 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 255 for LOIs [2022-11-03 01:46:47,768 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 255 for LOIs [2022-11-03 01:46:47,806 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 255 for LOIs [2022-11-03 01:46:47,849 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 421 for LOIs [2022-11-03 01:46:48,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:15,345 WARN L234 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 732 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:31,976 WARN L234 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 721 DAG size of output: 523 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:41,260 WARN L234 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 727 DAG size of output: 510 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:49,710 WARN L234 SmtUtils]: Spent 7.62s on a formula simplification. DAG size of input: 731 DAG size of output: 514 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:09,342 WARN L234 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 512 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:18,298 WARN L234 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 556 DAG size of output: 404 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:25,794 WARN L234 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 554 DAG size of output: 378 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:50,063 WARN L234 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 557 DAG size of output: 405 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:50,281 WARN L234 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:12,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1612556715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:12,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:51:12,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [4, 4, 4] total 101 [2022-11-03 01:51:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293332357] [2022-11-03 01:51:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-03 01:51:12,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-03 01:51:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=9738, Unknown=0, NotChecked=0, Total=10100 [2022-11-03 01:51:12,924 INFO L87 Difference]: Start difference. First operand 841 states and 1112 transitions. Second operand has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-03 01:52:00,566 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 537 DAG size of output: 508 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:52:26,877 WARN L234 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 491 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:52:32,430 WARN L234 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 489 DAG size of output: 358 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:52:55,289 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 485 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:07,389 INFO L93 Difference]: Finished difference Result 1994 states and 2720 transitions. [2022-11-03 01:54:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-03 01:54:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) Word has length 164 [2022-11-03 01:54:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:07,396 INFO L225 Difference]: With dead ends: 1994 [2022-11-03 01:54:07,397 INFO L226 Difference]: Without dead ends: 1180 [2022-11-03 01:54:07,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 391 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5026 ImplicationChecksByTransitivity, 346.6s TimeCoverageRelationStatistics Valid=513, Invalid=13059, Unknown=0, NotChecked=0, Total=13572 [2022-11-03 01:54:07,404 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 522 mSDsluCounter, 14174 mSDsCounter, 0 mSdLazyCounter, 21815 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 14216 SdHoareTripleChecker+Invalid, 21923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 21815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:07,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 14216 Invalid, 21923 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [108 Valid, 21815 Invalid, 0 Unknown, 0 Unchecked, 90.6s Time] [2022-11-03 01:54:07,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-03 01:54:07,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1006. [2022-11-03 01:54:07,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 656 states have (on average 1.2698170731707317) internal successors, (833), 673 states have internal predecessors, (833), 244 states have call successors, (244), 111 states have call predecessors, (244), 105 states have return successors, (251), 234 states have call predecessors, (251), 242 states have call successors, (251) [2022-11-03 01:54:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1328 transitions. [2022-11-03 01:54:07,749 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1328 transitions. Word has length 164 [2022-11-03 01:54:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:07,749 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1328 transitions. [2022-11-03 01:54:07,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-03 01:54:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1328 transitions. [2022-11-03 01:54:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 01:54:07,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:07,755 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:07,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:54:07,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:07,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:07,969 INFO L85 PathProgramCache]: Analyzing trace with hash -289588233, now seen corresponding path program 1 times [2022-11-03 01:54:07,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:07,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789317945] [2022-11-03 01:54:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:07,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:54:08,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:08,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789317945] [2022-11-03 01:54:08,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789317945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:54:08,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:54:08,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:54:08,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956912517] [2022-11-03 01:54:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:54:08,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:54:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:54:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:54:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:54:08,092 INFO L87 Difference]: Start difference. First operand 1006 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 01:54:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:08,695 INFO L93 Difference]: Finished difference Result 1520 states and 2013 transitions. [2022-11-03 01:54:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:54:08,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 166 [2022-11-03 01:54:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:08,701 INFO L225 Difference]: With dead ends: 1520 [2022-11-03 01:54:08,702 INFO L226 Difference]: Without dead ends: 966 [2022-11-03 01:54:08,704 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 [2022-11-03 01:54:08,704 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 448 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:08,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1178 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:54:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-03 01:54:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2022-11-03 01:54:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 627 states have (on average 1.277511961722488) internal successors, (801), 644 states have internal predecessors, (801), 235 states have call successors, (235), 107 states have call predecessors, (235), 101 states have return successors, (233), 225 states have call predecessors, (233), 233 states have call successors, (233) [2022-11-03 01:54:09,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1269 transitions. [2022-11-03 01:54:09,028 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1269 transitions. Word has length 166 [2022-11-03 01:54:09,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:09,028 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1269 transitions. [2022-11-03 01:54:09,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 01:54:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1269 transitions. [2022-11-03 01:54:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 01:54:09,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:09,033 INFO L195 NwaCegarLoop]: trace histogram [8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:54:09,034 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:09,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2083567838, now seen corresponding path program 1 times [2022-11-03 01:54:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:09,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627461672] [2022-11-03 01:54:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 01:54:09,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:09,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627461672] [2022-11-03 01:54:09,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627461672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:09,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656981811] [2022-11-03 01:54:09,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:09,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:09,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:09,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:09,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_428c1446-666c-4ff6-bc8a-b9dada34aa17/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:54:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:09,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:54:09,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:09,636 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 01:54:09,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-03 01:54:09,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656981811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:54:09,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [256891796] [2022-11-03 01:54:09,741 INFO L159 IcfgInterpreter]: Started Sifa with 144 locations of interest [2022-11-03 01:54:09,741 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:09,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:09,742 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:09,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:55:51,459 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-11-03 01:55:52,515 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-03 01:55:52,797 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-11-03 01:55:53,079 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-11-03 01:55:54,363 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-11-03 01:55:56,023 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-11-03 01:55:56,063 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-03 01:55:56,776 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 438 for LOIs [2022-11-03 01:55:57,050 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-03 01:55:58,413 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-11-03 01:55:58,452 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-11-03 01:55:59,412 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2022-11-03 01:55:59,570 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 283 for LOIs [2022-11-03 01:56:01,859 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 275 for LOIs [2022-11-03 01:56:02,551 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 257 for LOIs [2022-11-03 01:56:03,070 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 257 for LOIs [2022-11-03 01:56:03,105 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-11-03 01:56:03,148 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2022-11-03 01:56:07,717 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 262 for LOIs [2022-11-03 01:56:07,767 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:57:21,969 WARN L234 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 438 DAG size of output: 257 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:27,767 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 461 DAG size of output: 277 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:38,346 WARN L234 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 732 DAG size of output: 515 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)