./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 11:02:01,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 11:02:01,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 11:02:01,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 11:02:01,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 11:02:01,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 11:02:01,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 11:02:01,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 11:02:01,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 11:02:01,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 11:02:01,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 11:02:01,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 11:02:01,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 11:02:01,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 11:02:01,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 11:02:01,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 11:02:01,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 11:02:01,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 11:02:01,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 11:02:01,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 11:02:01,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 11:02:01,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 11:02:01,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 11:02:01,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 11:02:01,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 11:02:01,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 11:02:01,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 11:02:01,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 11:02:01,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 11:02:01,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 11:02:01,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 11:02:01,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 11:02:01,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 11:02:01,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 11:02:01,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 11:02:01,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 11:02:01,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 11:02:01,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 11:02:01,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 11:02:01,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 11:02:01,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 11:02:01,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 11:02:01,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 11:02:01,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 11:02:01,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 11:02:01,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 11:02:01,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 11:02:01,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 11:02:01,252 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 11:02:01,252 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 11:02:01,253 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 11:02:01,254 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 11:02:01,254 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 11:02:01,254 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 11:02:01,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 11:02:01,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 11:02:01,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 11:02:01,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 11:02:01,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 11:02:01,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 11:02:01,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 11:02:01,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 11:02:01,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:02:01,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 11:02:01,257 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 11:02:01,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 11:02:01,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 11:02:01,258 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 11:02:01,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 11:02:01,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 11:02:01,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 11:02:01,258 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_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3a1dbda837d8ce3c466139238aee66f09284cf7efb22d92a7aae56a5f98c665 [2022-12-14 11:02:01,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 11:02:01,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 11:02:01,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 11:02:01,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 11:02:01,480 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 11:02:01,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2022-12-14 11:02:04,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 11:02:04,392 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 11:02:04,393 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c [2022-12-14 11:02:04,407 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/data/dc7c89d44/eb7902515f454a57a04f3840115f1c2e/FLAGf85a53e51 [2022-12-14 11:02:04,418 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/data/dc7c89d44/eb7902515f454a57a04f3840115f1c2e [2022-12-14 11:02:04,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 11:02:04,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 11:02:04,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 11:02:04,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 11:02:04,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 11:02:04,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:02:04" (1/1) ... [2022-12-14 11:02:04,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a5d787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:04, skipping insertion in model container [2022-12-14 11:02:04,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:02:04" (1/1) ... [2022-12-14 11:02:04,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 11:02:04,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 11:02:04,604 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c[1542,1555] [2022-12-14 11:02:04,616 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,730 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,732 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,736 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,775 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,779 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,789 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:02:04,894 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 11:02:04,903 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/sv-benchmarks/c/product-lines/email_spec4_product19.cil.c[1542,1555] [2022-12-14 11:02:04,904 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,927 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,928 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,930 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,940 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,941 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,945 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-14 11:02:04,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 11:02:05,010 INFO L208 MainTranslator]: Completed translation [2022-12-14 11:02:05,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05 WrapperNode [2022-12-14 11:02:05,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 11:02:05,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 11:02:05,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 11:02:05,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 11:02:05,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,086 INFO L138 Inliner]: procedures = 127, calls = 199, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 982 [2022-12-14 11:02:05,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 11:02:05,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 11:02:05,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 11:02:05,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 11:02:05,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 11:02:05,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 11:02:05,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 11:02:05,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 11:02:05,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (1/1) ... [2022-12-14 11:02:05,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 11:02:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:02:05,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 11:02:05,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 11:02:05,216 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-14 11:02:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-14 11:02:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-14 11:02:05,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-14 11:02:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-14 11:02:05,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-14 11:02:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-14 11:02:05,217 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-14 11:02:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-14 11:02:05,218 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-14 11:02:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-14 11:02:05,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-14 11:02:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-14 11:02:05,218 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-14 11:02:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-14 11:02:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-14 11:02:05,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-14 11:02:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-14 11:02:05,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-14 11:02:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 11:02:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-14 11:02:05,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-14 11:02:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-14 11:02:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-14 11:02:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-14 11:02:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-14 11:02:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-14 11:02:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-14 11:02:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-14 11:02:05,220 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-14 11:02:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-14 11:02:05,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-14 11:02:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-14 11:02:05,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-14 11:02:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 11:02:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-14 11:02:05,221 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-14 11:02:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 11:02:05,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 11:02:05,360 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 11:02:05,361 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 11:02:05,868 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 11:02:06,185 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 11:02:06,186 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 11:02:06,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:02:06 BoogieIcfgContainer [2022-12-14 11:02:06,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 11:02:06,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 11:02:06,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 11:02:06,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 11:02:06,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:02:04" (1/3) ... [2022-12-14 11:02:06,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17905034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:02:06, skipping insertion in model container [2022-12-14 11:02:06,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:02:05" (2/3) ... [2022-12-14 11:02:06,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17905034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:02:06, skipping insertion in model container [2022-12-14 11:02:06,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:02:06" (3/3) ... [2022-12-14 11:02:06,196 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2022-12-14 11:02:06,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 11:02:06,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 11:02:06,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 11:02:06,270 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;@3cee7b02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 11:02:06,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 11:02:06,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 94 states have (on average 1.351063829787234) internal successors, (127), 96 states have internal predecessors, (127), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-12-14 11:02:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 11:02:06,285 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:02:06,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:02:06,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:02:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:02:06,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1395671543, now seen corresponding path program 1 times [2022-12-14 11:02:06,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:02:06,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40602611] [2022-12-14 11:02:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:06,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:02:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:06,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:02:06,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:06,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40602611] [2022-12-14 11:02:06,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40602611] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:02:06,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:02:06,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 11:02:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988391835] [2022-12-14 11:02:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:02:06,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 11:02:06,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:02:06,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 11:02:06,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:02:06,576 INFO L87 Difference]: Start difference. First operand has 157 states, 94 states have (on average 1.351063829787234) internal successors, (127), 96 states have internal predecessors, (127), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:02:06,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:02:06,680 INFO L93 Difference]: Finished difference Result 231 states and 308 transitions. [2022-12-14 11:02:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 11:02:06,683 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 58 [2022-12-14 11:02:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:02:06,690 INFO L225 Difference]: With dead ends: 231 [2022-12-14 11:02:06,690 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 11:02:06,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 11:02:06,695 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:02:06,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:02:06,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 11:02:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2022-12-14 11:02:06,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 92 states have (on average 1.315217391304348) internal successors, (121), 93 states have internal predecessors, (121), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-12-14 11:02:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 208 transitions. [2022-12-14 11:02:06,730 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 208 transitions. Word has length 58 [2022-12-14 11:02:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:02:06,731 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 208 transitions. [2022-12-14 11:02:06,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:02:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 208 transitions. [2022-12-14 11:02:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 11:02:06,734 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:02:06,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:02:06,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 11:02:06,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:02:06,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:02:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1705005, now seen corresponding path program 1 times [2022-12-14 11:02:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:02:06,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35235916] [2022-12-14 11:02:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:02:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:02:06,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:06,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35235916] [2022-12-14 11:02:06,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35235916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:02:06,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:02:06,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:02:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293930260] [2022-12-14 11:02:06,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:02:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:02:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:02:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:02:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:02:06,881 INFO L87 Difference]: Start difference. First operand 154 states and 208 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:02:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:02:06,971 INFO L93 Difference]: Finished difference Result 227 states and 296 transitions. [2022-12-14 11:02:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:02:06,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 59 [2022-12-14 11:02:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:02:06,974 INFO L225 Difference]: With dead ends: 227 [2022-12-14 11:02:06,974 INFO L226 Difference]: Without dead ends: 156 [2022-12-14 11:02:06,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:02:06,976 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:02:06,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 357 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:02:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-12-14 11:02:06,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-12-14 11:02:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 94 states have (on average 1.3085106382978724) internal successors, (123), 95 states have internal predecessors, (123), 44 states have call successors, (44), 17 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-12-14 11:02:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 210 transitions. [2022-12-14 11:02:06,992 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 210 transitions. Word has length 59 [2022-12-14 11:02:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:02:06,992 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 210 transitions. [2022-12-14 11:02:06,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:02:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 210 transitions. [2022-12-14 11:02:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 11:02:06,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:02:06,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:02:06,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 11:02:06,994 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:02:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:02:06,994 INFO L85 PathProgramCache]: Analyzing trace with hash -418448415, now seen corresponding path program 1 times [2022-12-14 11:02:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:02:06,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229255509] [2022-12-14 11:02:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:06,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:02:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:02:07,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:07,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229255509] [2022-12-14 11:02:07,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229255509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:02:07,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:02:07,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:02:07,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636184678] [2022-12-14 11:02:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:02:07,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:02:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:02:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:02:07,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:02:07,106 INFO L87 Difference]: Start difference. First operand 156 states and 210 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:02:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:02:07,196 INFO L93 Difference]: Finished difference Result 342 states and 479 transitions. [2022-12-14 11:02:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:02:07,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2022-12-14 11:02:07,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:02:07,198 INFO L225 Difference]: With dead ends: 342 [2022-12-14 11:02:07,198 INFO L226 Difference]: Without dead ends: 204 [2022-12-14 11:02:07,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:02:07,201 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 57 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:02:07,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 370 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:02:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-12-14 11:02:07,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2022-12-14 11:02:07,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 126 states have (on average 1.3968253968253967) internal successors, (176), 127 states have internal predecessors, (176), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-12-14 11:02:07,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 285 transitions. [2022-12-14 11:02:07,221 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 285 transitions. Word has length 64 [2022-12-14 11:02:07,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:02:07,221 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 285 transitions. [2022-12-14 11:02:07,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:02:07,222 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 285 transitions. [2022-12-14 11:02:07,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 11:02:07,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:02:07,224 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:02:07,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 11:02:07,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:02:07,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:02:07,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1544923303, now seen corresponding path program 1 times [2022-12-14 11:02:07,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:02:07,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27851989] [2022-12-14 11:02:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:07,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:02:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:02:07,377 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:02:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27851989] [2022-12-14 11:02:07,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27851989] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:02:07,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191638343] [2022-12-14 11:02:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:02:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:02:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:02:07,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:02:07,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 11:02:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:02:07,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 11:02:07,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:02:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:02:07,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:02:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:02:07,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191638343] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:02:07,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [418122975] [2022-12-14 11:02:07,710 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-12-14 11:02:07,710 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:02:07,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:02:07,719 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:02:07,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:02:27,687 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-12-14 11:02:28,001 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:02:28,312 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 256 for LOIs [2022-12-14 11:02:30,155 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-12-14 11:02:30,193 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 258 for LOIs [2022-12-14 11:02:40,571 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 453 for LOIs [2022-12-14 11:02:41,311 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 452 for LOIs [2022-12-14 11:02:41,980 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 244 for LOIs [2022-12-14 11:02:42,022 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:04:02,280 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 577 DAG size of output: 421 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:04:06,370 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2704#(and (= ~__ste_Client_Keyring1_User2~0 0) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_~msg#1|) (<= |outgoing_outgoing__wrappee__Keys_~tmp~9#1| 2147483647) (= ~__ste_email_isEncrypted1~0 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~client#1|) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 1 |outgoing_mail_#in~client#1|) (<= |outgoing_mail_#in~msg#1| 1) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 1 |outgoing_sign_~client#1|) (<= 1 |outgoing_mail_~msg#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 1) (= ~__ste_client_name2~0.offset 0) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 1) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing_sign_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ |outgoing_sign_~privkey~0#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (<= |outgoing_sign_~privkey~0#1| 2147483647) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~client#1|) (<= |outgoing_sign_~client#1| 1) (= |old(~__ste_email_signKey0~0)| 0) (= ~__ste_email_body0~0.offset 0) (<= |outgoing_sign_~tmp~13#1| 2147483647) (<= 1 |outgoing_~client#1|) (<= 0 ~__ste_email_isSigned1~0) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing_getClientId_#res#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~tmp~9#1| 2147483648)) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 1) (= ~head~0.offset 0) (= |outgoing_#in~msg#1| 1) (<= 1 |outgoing_outgoing__wrappee__Keys_~client#1|) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (= |old(~queue_empty~0)| 1) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (= |old(~__ste_email_from0~0)| 0) (<= |outgoing_sign_#in~client#1| 1) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (= |old(~__ste_email_isSigned0~0)| 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~msg#1|) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__ste_Client_Keyring0_User0~0 0) (<= 1 |outgoing_mail_#in~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (not (= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 1) (<= 1 |outgoing_mail_~__utac__ad__arg1~0#1|) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (= 3 ~chuck~0) (<= 0 ~__ste_email_signKey1~0) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_email_isSigned1~0 0) (<= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= |outgoing_outgoing__wrappee__Keys_~client#1| 1) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 1 |outgoing_sign_#in~client#1|) (<= |outgoing_getClientId_#in~handle#1| 1) (<= 1 |outgoing_sign_~msg#1|) (<= ~__ste_ClientKeyring_size1~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 0 ~head~0.base) (<= 1 |outgoing_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing_mail_~client#1| 1) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= |old(~queued_message~0)| 0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= |outgoing_mail_~msg#1| 1) (= |old(~queued_client~0)| 0) (<= ~__ste_email_encryptionKey0~0 0) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~13#1|)) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_privateKey0~0 |outgoing___utac_acc__SignForward_spec__1_~tmp~0#1|) (<= |outgoing_mail_#in~client#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= |outgoing_outgoing__wrappee__Keys_#in~client#1| 1) (<= ~__ste_Client_AddressBook0_Address2~0 0) (= ~__ste_Client_Keyring2_User2~0 0) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_sign_#in~msg#1| 1) (<= |old(~__ste_email_isSigned1~0)| 0) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_#in~client#1| 1) (<= |outgoing_getClientId_~retValue_acc~31#1| 2147483647) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_email_isEncrypted0~0 0) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= |outgoing_~msg#1| 1) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= |outgoing_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_client_name0~0.offset 0) (= ~__ste_client_outbuffer1~0 0) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= 1 |outgoing_getClientId_#in~handle#1|) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= |outgoing_getClientId_~handle#1| 1) (<= 1 |outgoing_sign_#in~msg#1|) (<= 1 |outgoing_#in~client#1|) (<= |outgoing_~client#1| 1) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing_mail_~__utac__ad__arg2~0#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~client#1|) (<= ~bob~0 1) (<= 0 |old(~__ste_email_isSigned1~0)|) (<= |old(~__ste_email_signKey1~0)| 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= 0 |outgoing___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing_mail_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~31#1| 2147483648)) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_client_name1~0.base) (<= 0 |old(~__ste_email_signKey1~0)|) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= |outgoing_outgoing__wrappee__Keys_#in~msg#1| 1) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~0#1| 0) (<= ~queued_client~0 0))' at error location [2022-12-14 11:04:06,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:04:06,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:04:06,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 11:04:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393632021] [2022-12-14 11:04:06,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:04:06,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 11:04:06,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 11:04:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2493, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 11:04:06,373 INFO L87 Difference]: Start difference. First operand 199 states and 285 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:04:06,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:06,589 INFO L93 Difference]: Finished difference Result 520 states and 798 transitions. [2022-12-14 11:04:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 11:04:06,589 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 65 [2022-12-14 11:04:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:06,593 INFO L225 Difference]: With dead ends: 520 [2022-12-14 11:04:06,593 INFO L226 Difference]: Without dead ends: 449 [2022-12-14 11:04:06,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 84.3s TimeCoverageRelationStatistics Valid=159, Invalid=2493, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 11:04:06,597 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 256 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:06,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 673 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:04:06,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-12-14 11:04:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 434. [2022-12-14 11:04:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 297 states have (on average 1.5218855218855218) internal successors, (452), 298 states have internal predecessors, (452), 119 states have call successors, (119), 17 states have call predecessors, (119), 17 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2022-12-14 11:04:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 689 transitions. [2022-12-14 11:04:06,641 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 689 transitions. Word has length 65 [2022-12-14 11:04:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:06,642 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 689 transitions. [2022-12-14 11:04:06,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-14 11:04:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 689 transitions. [2022-12-14 11:04:06,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 11:04:06,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:06,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:06,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 11:04:06,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:04:06,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1978898582, now seen corresponding path program 1 times [2022-12-14 11:04:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:06,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369729410] [2022-12-14 11:04:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:06,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:06,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369729410] [2022-12-14 11:04:06,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369729410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:06,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:06,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:06,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051137601] [2022-12-14 11:04:06,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:06,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:06,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:06,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:06,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:06,937 INFO L87 Difference]: Start difference. First operand 434 states and 689 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:07,036 INFO L93 Difference]: Finished difference Result 1073 states and 1736 transitions. [2022-12-14 11:04:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 71 [2022-12-14 11:04:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:07,040 INFO L225 Difference]: With dead ends: 1073 [2022-12-14 11:04:07,040 INFO L226 Difference]: Without dead ends: 671 [2022-12-14 11:04:07,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,042 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 55 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:07,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 375 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-12-14 11:04:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 666. [2022-12-14 11:04:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 465 states have (on average 1.5376344086021505) internal successors, (715), 466 states have internal predecessors, (715), 183 states have call successors, (183), 17 states have call predecessors, (183), 17 states have return successors, (182), 182 states have call predecessors, (182), 182 states have call successors, (182) [2022-12-14 11:04:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1080 transitions. [2022-12-14 11:04:07,068 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1080 transitions. Word has length 71 [2022-12-14 11:04:07,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:07,068 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 1080 transitions. [2022-12-14 11:04:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1080 transitions. [2022-12-14 11:04:07,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 11:04:07,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:07,071 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 11:04:07,071 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:07,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2080833247, now seen corresponding path program 1 times [2022-12-14 11:04:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:07,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403416873] [2022-12-14 11:04:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:07,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403416873] [2022-12-14 11:04:07,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403416873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:07,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:07,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149982375] [2022-12-14 11:04:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:07,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,126 INFO L87 Difference]: Start difference. First operand 666 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:07,215 INFO L93 Difference]: Finished difference Result 1630 states and 2679 transitions. [2022-12-14 11:04:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2022-12-14 11:04:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:07,219 INFO L225 Difference]: With dead ends: 1630 [2022-12-14 11:04:07,219 INFO L226 Difference]: Without dead ends: 1026 [2022-12-14 11:04:07,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,221 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 53 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:07,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 365 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-12-14 11:04:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1021. [2022-12-14 11:04:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 725 states have (on average 1.543448275862069) internal successors, (1119), 726 states have internal predecessors, (1119), 278 states have call successors, (278), 17 states have call predecessors, (278), 17 states have return successors, (277), 277 states have call predecessors, (277), 277 states have call successors, (277) [2022-12-14 11:04:07,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1674 transitions. [2022-12-14 11:04:07,262 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1674 transitions. Word has length 72 [2022-12-14 11:04:07,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:07,262 INFO L495 AbstractCegarLoop]: Abstraction has 1021 states and 1674 transitions. [2022-12-14 11:04:07,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1674 transitions. [2022-12-14 11:04:07,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 11:04:07,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:07,266 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:07,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 11:04:07,266 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:07,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1154592088, now seen corresponding path program 1 times [2022-12-14 11:04:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:07,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317660769] [2022-12-14 11:04:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:07,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:07,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:07,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317660769] [2022-12-14 11:04:07,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317660769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:07,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:07,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301107894] [2022-12-14 11:04:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:07,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:07,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,313 INFO L87 Difference]: Start difference. First operand 1021 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:07,421 INFO L93 Difference]: Finished difference Result 2428 states and 4023 transitions. [2022-12-14 11:04:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:07,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2022-12-14 11:04:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:07,429 INFO L225 Difference]: With dead ends: 2428 [2022-12-14 11:04:07,429 INFO L226 Difference]: Without dead ends: 1549 [2022-12-14 11:04:07,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,433 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 51 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:07,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 360 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-12-14 11:04:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1544. [2022-12-14 11:04:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1125 states have (on average 1.5475555555555556) internal successors, (1741), 1126 states have internal predecessors, (1741), 401 states have call successors, (401), 17 states have call predecessors, (401), 17 states have return successors, (400), 400 states have call predecessors, (400), 400 states have call successors, (400) [2022-12-14 11:04:07,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2542 transitions. [2022-12-14 11:04:07,541 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2542 transitions. Word has length 73 [2022-12-14 11:04:07,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:07,541 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 2542 transitions. [2022-12-14 11:04:07,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2542 transitions. [2022-12-14 11:04:07,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 11:04:07,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:07,547 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:07,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 11:04:07,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:07,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1329655454, now seen corresponding path program 1 times [2022-12-14 11:04:07,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:07,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826787257] [2022-12-14 11:04:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:07,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:07,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:07,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826787257] [2022-12-14 11:04:07,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826787257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:07,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:07,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:07,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983804410] [2022-12-14 11:04:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:07,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:07,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:07,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,623 INFO L87 Difference]: Start difference. First operand 1544 states and 2542 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:07,793 INFO L93 Difference]: Finished difference Result 3638 states and 6051 transitions. [2022-12-14 11:04:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2022-12-14 11:04:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:07,801 INFO L225 Difference]: With dead ends: 3638 [2022-12-14 11:04:07,801 INFO L226 Difference]: Without dead ends: 2373 [2022-12-14 11:04:07,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,805 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 49 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:07,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 360 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:07,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-12-14 11:04:07,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2368. [2022-12-14 11:04:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 1770 states have (on average 1.5497175141242938) internal successors, (2743), 1771 states have internal predecessors, (2743), 580 states have call successors, (580), 17 states have call predecessors, (580), 17 states have return successors, (579), 579 states have call predecessors, (579), 579 states have call successors, (579) [2022-12-14 11:04:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3902 transitions. [2022-12-14 11:04:07,908 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3902 transitions. Word has length 74 [2022-12-14 11:04:07,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:07,908 INFO L495 AbstractCegarLoop]: Abstraction has 2368 states and 3902 transitions. [2022-12-14 11:04:07,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:07,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3902 transitions. [2022-12-14 11:04:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 11:04:07,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:07,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:07,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 11:04:07,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -516929612, now seen corresponding path program 1 times [2022-12-14 11:04:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:07,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697754903] [2022-12-14 11:04:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:07,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:07,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697754903] [2022-12-14 11:04:07,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697754903] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:07,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:07,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:07,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665523787] [2022-12-14 11:04:07,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:07,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:07,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:07,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:07,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:07,974 INFO L87 Difference]: Start difference. First operand 2368 states and 3902 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:08,191 INFO L93 Difference]: Finished difference Result 5849 states and 9723 transitions. [2022-12-14 11:04:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 75 [2022-12-14 11:04:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:08,204 INFO L225 Difference]: With dead ends: 5849 [2022-12-14 11:04:08,204 INFO L226 Difference]: Without dead ends: 3903 [2022-12-14 11:04:08,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:08,210 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 47 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:08,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 381 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:08,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-12-14 11:04:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3898. [2022-12-14 11:04:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 956 states have call successors, (956), 17 states have call predecessors, (956), 17 states have return successors, (955), 955 states have call predecessors, (955), 955 states have call successors, (955) [2022-12-14 11:04:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 6409 transitions. [2022-12-14 11:04:08,404 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 6409 transitions. Word has length 75 [2022-12-14 11:04:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:08,404 INFO L495 AbstractCegarLoop]: Abstraction has 3898 states and 6409 transitions. [2022-12-14 11:04:08,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 6409 transitions. [2022-12-14 11:04:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 11:04:08,409 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:08,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 11:04:08,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash 725495558, now seen corresponding path program 1 times [2022-12-14 11:04:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:08,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091802088] [2022-12-14 11:04:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:08,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:08,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:08,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091802088] [2022-12-14 11:04:08,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091802088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:08,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:08,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:08,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181736978] [2022-12-14 11:04:08,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:08,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:08,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:08,453 INFO L87 Difference]: Start difference. First operand 3898 states and 6409 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:08,748 INFO L93 Difference]: Finished difference Result 9710 states and 16120 transitions. [2022-12-14 11:04:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2022-12-14 11:04:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:08,769 INFO L225 Difference]: With dead ends: 9710 [2022-12-14 11:04:08,769 INFO L226 Difference]: Without dead ends: 6500 [2022-12-14 11:04:08,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:08,775 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 45 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:08,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 365 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:08,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2022-12-14 11:04:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 6495. [2022-12-14 11:04:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6495 states, 4915 states have (on average 1.5338758901322482) internal successors, (7539), 4916 states have internal predecessors, (7539), 1562 states have call successors, (1562), 17 states have call predecessors, (1562), 17 states have return successors, (1561), 1561 states have call predecessors, (1561), 1561 states have call successors, (1561) [2022-12-14 11:04:09,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6495 states to 6495 states and 10662 transitions. [2022-12-14 11:04:09,080 INFO L78 Accepts]: Start accepts. Automaton has 6495 states and 10662 transitions. Word has length 76 [2022-12-14 11:04:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:09,080 INFO L495 AbstractCegarLoop]: Abstraction has 6495 states and 10662 transitions. [2022-12-14 11:04:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6495 states and 10662 transitions. [2022-12-14 11:04:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 11:04:09,086 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:09,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:09,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 11:04:09,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash -187731262, now seen corresponding path program 1 times [2022-12-14 11:04:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:09,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122638871] [2022-12-14 11:04:09,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:09,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122638871] [2022-12-14 11:04:09,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122638871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:09,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:09,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:09,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182835537] [2022-12-14 11:04:09,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:09,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:09,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:09,130 INFO L87 Difference]: Start difference. First operand 6495 states and 10662 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:09,619 INFO L93 Difference]: Finished difference Result 16962 states and 28038 transitions. [2022-12-14 11:04:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 77 [2022-12-14 11:04:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:09,658 INFO L225 Difference]: With dead ends: 16962 [2022-12-14 11:04:09,658 INFO L226 Difference]: Without dead ends: 11444 [2022-12-14 11:04:09,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:09,671 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 43 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:09,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 377 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11444 states. [2022-12-14 11:04:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11444 to 11439. [2022-12-14 11:04:10,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11439 states, 8656 states have (on average 1.5203327171903882) internal successors, (13160), 8657 states have internal predecessors, (13160), 2765 states have call successors, (2765), 17 states have call predecessors, (2765), 17 states have return successors, (2764), 2764 states have call predecessors, (2764), 2764 states have call successors, (2764) [2022-12-14 11:04:10,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11439 states to 11439 states and 18689 transitions. [2022-12-14 11:04:10,216 INFO L78 Accepts]: Start accepts. Automaton has 11439 states and 18689 transitions. Word has length 77 [2022-12-14 11:04:10,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:10,216 INFO L495 AbstractCegarLoop]: Abstraction has 11439 states and 18689 transitions. [2022-12-14 11:04:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:10,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11439 states and 18689 transitions. [2022-12-14 11:04:10,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 11:04:10,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:10,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:10,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 11:04:10,227 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:10,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:10,227 INFO L85 PathProgramCache]: Analyzing trace with hash 785188967, now seen corresponding path program 1 times [2022-12-14 11:04:10,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:10,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633036128] [2022-12-14 11:04:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:10,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:10,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:10,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633036128] [2022-12-14 11:04:10,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633036128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:10,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:10,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:10,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745056265] [2022-12-14 11:04:10,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:10,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:10,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:10,285 INFO L87 Difference]: Start difference. First operand 11439 states and 18689 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:11,086 INFO L93 Difference]: Finished difference Result 30281 states and 49804 transitions. [2022-12-14 11:04:11,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:11,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-12-14 11:04:11,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:11,154 INFO L225 Difference]: With dead ends: 30281 [2022-12-14 11:04:11,154 INFO L226 Difference]: Without dead ends: 20271 [2022-12-14 11:04:11,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:11,170 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 41 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:11,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 365 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:11,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20271 states. [2022-12-14 11:04:12,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20271 to 20266. [2022-12-14 11:04:12,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20266 states, 15444 states have (on average 1.5124967624967625) internal successors, (23359), 15445 states have internal predecessors, (23359), 4804 states have call successors, (4804), 17 states have call predecessors, (4804), 17 states have return successors, (4803), 4803 states have call predecessors, (4803), 4803 states have call successors, (4803) [2022-12-14 11:04:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20266 states to 20266 states and 32966 transitions. [2022-12-14 11:04:12,302 INFO L78 Accepts]: Start accepts. Automaton has 20266 states and 32966 transitions. Word has length 78 [2022-12-14 11:04:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:12,303 INFO L495 AbstractCegarLoop]: Abstraction has 20266 states and 32966 transitions. [2022-12-14 11:04:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 20266 states and 32966 transitions. [2022-12-14 11:04:12,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 11:04:12,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:12,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:12,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 11:04:12,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:12,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:12,311 INFO L85 PathProgramCache]: Analyzing trace with hash -284566460, now seen corresponding path program 1 times [2022-12-14 11:04:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:12,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029811859] [2022-12-14 11:04:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:12,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:12,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029811859] [2022-12-14 11:04:12,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029811859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:12,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:12,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:12,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369118944] [2022-12-14 11:04:12,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:12,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:12,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:12,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:12,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:12,355 INFO L87 Difference]: Start difference. First operand 20266 states and 32966 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:13,839 INFO L93 Difference]: Finished difference Result 54993 states and 89896 transitions. [2022-12-14 11:04:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:13,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 79 [2022-12-14 11:04:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:13,943 INFO L225 Difference]: With dead ends: 54993 [2022-12-14 11:04:13,944 INFO L226 Difference]: Without dead ends: 36711 [2022-12-14 11:04:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:13,983 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 39 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 366 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:14,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36711 states. [2022-12-14 11:04:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36711 to 36706. [2022-12-14 11:04:15,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36706 states, 28169 states have (on average 1.5017572508786254) internal successors, (42303), 28170 states have internal predecessors, (42303), 8519 states have call successors, (8519), 17 states have call predecessors, (8519), 17 states have return successors, (8518), 8518 states have call predecessors, (8518), 8518 states have call successors, (8518) [2022-12-14 11:04:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36706 states to 36706 states and 59340 transitions. [2022-12-14 11:04:15,922 INFO L78 Accepts]: Start accepts. Automaton has 36706 states and 59340 transitions. Word has length 79 [2022-12-14 11:04:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:15,922 INFO L495 AbstractCegarLoop]: Abstraction has 36706 states and 59340 transitions. [2022-12-14 11:04:15,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 36706 states and 59340 transitions. [2022-12-14 11:04:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 11:04:15,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:15,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 11:04:15,931 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1832266343, now seen corresponding path program 1 times [2022-12-14 11:04:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:15,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664558243] [2022-12-14 11:04:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:15,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:15,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:15,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664558243] [2022-12-14 11:04:15,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664558243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:15,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:15,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:04:15,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564380131] [2022-12-14 11:04:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:15,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:04:15,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:04:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:15,974 INFO L87 Difference]: Start difference. First operand 36706 states and 59340 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:18,907 INFO L93 Difference]: Finished difference Result 67610 states and 109477 transitions. [2022-12-14 11:04:18,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:04:18,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2022-12-14 11:04:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:19,120 INFO L225 Difference]: With dead ends: 67610 [2022-12-14 11:04:19,120 INFO L226 Difference]: Without dead ends: 67539 [2022-12-14 11:04:19,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:04:19,145 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 37 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:19,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 365 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67539 states. [2022-12-14 11:04:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67539 to 67534. [2022-12-14 11:04:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67534 states, 52198 states have (on average 1.4877773094754587) internal successors, (77659), 52199 states have internal predecessors, (77659), 15318 states have call successors, (15318), 17 states have call predecessors, (15318), 17 states have return successors, (15317), 15317 states have call predecessors, (15317), 15317 states have call successors, (15317) [2022-12-14 11:04:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67534 states to 67534 states and 108294 transitions. [2022-12-14 11:04:22,452 INFO L78 Accepts]: Start accepts. Automaton has 67534 states and 108294 transitions. Word has length 80 [2022-12-14 11:04:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:22,452 INFO L495 AbstractCegarLoop]: Abstraction has 67534 states and 108294 transitions. [2022-12-14 11:04:22,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-14 11:04:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 67534 states and 108294 transitions. [2022-12-14 11:04:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 11:04:22,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:22,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 11:04:22,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:22,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash 759591523, now seen corresponding path program 1 times [2022-12-14 11:04:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:22,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195791368] [2022-12-14 11:04:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:22,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 11:04:23,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195791368] [2022-12-14 11:04:23,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195791368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:23,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:23,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-14 11:04:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289048257] [2022-12-14 11:04:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:23,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 11:04:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 11:04:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-12-14 11:04:23,217 INFO L87 Difference]: Start difference. First operand 67534 states and 108294 transitions. Second operand has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 11:04:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:27,499 INFO L93 Difference]: Finished difference Result 67643 states and 108448 transitions. [2022-12-14 11:04:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 11:04:27,500 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 81 [2022-12-14 11:04:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:27,679 INFO L225 Difference]: With dead ends: 67643 [2022-12-14 11:04:27,679 INFO L226 Difference]: Without dead ends: 67581 [2022-12-14 11:04:27,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-12-14 11:04:27,704 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 271 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:27,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2355 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 11:04:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67581 states. [2022-12-14 11:04:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67581 to 67551. [2022-12-14 11:04:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67551 states, 52208 states have (on average 1.4876647257125344) internal successors, (77668), 52208 states have internal predecessors, (77668), 15322 states have call successors, (15322), 21 states have call predecessors, (15322), 20 states have return successors, (15321), 15321 states have call predecessors, (15321), 15321 states have call successors, (15321) [2022-12-14 11:04:31,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67551 states to 67551 states and 108311 transitions. [2022-12-14 11:04:31,687 INFO L78 Accepts]: Start accepts. Automaton has 67551 states and 108311 transitions. Word has length 81 [2022-12-14 11:04:31,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:31,687 INFO L495 AbstractCegarLoop]: Abstraction has 67551 states and 108311 transitions. [2022-12-14 11:04:31,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 states have internal predecessors, (49), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-14 11:04:31,687 INFO L276 IsEmpty]: Start isEmpty. Operand 67551 states and 108311 transitions. [2022-12-14 11:04:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-14 11:04:31,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:31,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:31,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 11:04:31,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1638129275, now seen corresponding path program 1 times [2022-12-14 11:04:31,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:31,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785700372] [2022-12-14 11:04:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:31,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 11:04:31,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:31,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785700372] [2022-12-14 11:04:31,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785700372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:31,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:31,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 11:04:31,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990717489] [2022-12-14 11:04:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:31,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 11:04:31,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:31,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 11:04:31,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:04:31,851 INFO L87 Difference]: Start difference. First operand 67551 states and 108311 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 11:04:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:35,204 INFO L93 Difference]: Finished difference Result 67601 states and 108363 transitions. [2022-12-14 11:04:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 11:04:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 114 [2022-12-14 11:04:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:35,378 INFO L225 Difference]: With dead ends: 67601 [2022-12-14 11:04:35,379 INFO L226 Difference]: Without dead ends: 67551 [2022-12-14 11:04:35,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 11:04:35,399 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 18 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:35,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 680 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:04:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67551 states. [2022-12-14 11:04:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67551 to 67551. [2022-12-14 11:04:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67551 states, 52208 states have (on average 1.4876455715599142) internal successors, (77667), 52208 states have internal predecessors, (77667), 15322 states have call successors, (15322), 21 states have call predecessors, (15322), 20 states have return successors, (15321), 15321 states have call predecessors, (15321), 15321 states have call successors, (15321) [2022-12-14 11:04:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67551 states to 67551 states and 108310 transitions. [2022-12-14 11:04:39,196 INFO L78 Accepts]: Start accepts. Automaton has 67551 states and 108310 transitions. Word has length 114 [2022-12-14 11:04:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:39,196 INFO L495 AbstractCegarLoop]: Abstraction has 67551 states and 108310 transitions. [2022-12-14 11:04:39,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 11:04:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 67551 states and 108310 transitions. [2022-12-14 11:04:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-14 11:04:39,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:39,255 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:39,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 11:04:39,255 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:39,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:39,255 INFO L85 PathProgramCache]: Analyzing trace with hash -733433544, now seen corresponding path program 1 times [2022-12-14 11:04:39,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456712832] [2022-12-14 11:04:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:39,495 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 11:04:39,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456712832] [2022-12-14 11:04:39,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456712832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:39,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:04:39,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 11:04:39,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466489440] [2022-12-14 11:04:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:39,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 11:04:39,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 11:04:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-14 11:04:39,497 INFO L87 Difference]: Start difference. First operand 67551 states and 108310 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 11:04:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:43,403 INFO L93 Difference]: Finished difference Result 67583 states and 108339 transitions. [2022-12-14 11:04:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 11:04:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) Word has length 119 [2022-12-14 11:04:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:43,575 INFO L225 Difference]: With dead ends: 67583 [2022-12-14 11:04:43,575 INFO L226 Difference]: Without dead ends: 67557 [2022-12-14 11:04:43,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-12-14 11:04:43,600 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:43,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 617 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 11:04:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67557 states. [2022-12-14 11:04:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67557 to 67557. [2022-12-14 11:04:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67557 states, 52211 states have (on average 1.4875983988048496) internal successors, (77669), 52211 states have internal predecessors, (77669), 15322 states have call successors, (15322), 24 states have call predecessors, (15322), 23 states have return successors, (15321), 15321 states have call predecessors, (15321), 15321 states have call successors, (15321) [2022-12-14 11:04:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67557 states to 67557 states and 108312 transitions. [2022-12-14 11:04:47,564 INFO L78 Accepts]: Start accepts. Automaton has 67557 states and 108312 transitions. Word has length 119 [2022-12-14 11:04:47,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:04:47,565 INFO L495 AbstractCegarLoop]: Abstraction has 67557 states and 108312 transitions. [2022-12-14 11:04:47,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 7 states have internal predecessors, (68), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 5 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-14 11:04:47,565 INFO L276 IsEmpty]: Start isEmpty. Operand 67557 states and 108312 transitions. [2022-12-14 11:04:47,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-14 11:04:47,650 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:04:47,651 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:04:47,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 11:04:47,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:04:47,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:04:47,651 INFO L85 PathProgramCache]: Analyzing trace with hash -775115674, now seen corresponding path program 1 times [2022-12-14 11:04:47,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:04:47,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933376087] [2022-12-14 11:04:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:47,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:04:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 11:04:49,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:04:49,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933376087] [2022-12-14 11:04:49,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933376087] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:04:49,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922934330] [2022-12-14 11:04:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:04:49,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:04:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:04:49,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:04:49,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 11:04:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:04:49,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:04:49,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:04:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 11:04:49,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:04:49,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922934330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:04:49,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:04:49,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [25] total 27 [2022-12-14 11:04:49,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030670297] [2022-12-14 11:04:49,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:04:49,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 11:04:49,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:04:49,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 11:04:49,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:04:49,705 INFO L87 Difference]: Start difference. First operand 67557 states and 108312 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:04:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:04:55,120 INFO L93 Difference]: Finished difference Result 99772 states and 159824 transitions. [2022-12-14 11:04:55,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 11:04:55,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 143 [2022-12-14 11:04:55,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:04:55,403 INFO L225 Difference]: With dead ends: 99772 [2022-12-14 11:04:55,404 INFO L226 Difference]: Without dead ends: 99668 [2022-12-14 11:04:55,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-12-14 11:04:55,437 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 11:04:55,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 501 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 11:04:55,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99668 states. [2022-12-14 11:05:01,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99668 to 97145. [2022-12-14 11:05:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97145 states, 75331 states have (on average 1.4687578818812972) internal successors, (110643), 75331 states have internal predecessors, (110643), 21784 states have call successors, (21784), 30 states have call predecessors, (21784), 29 states have return successors, (21783), 21783 states have call predecessors, (21783), 21783 states have call successors, (21783) [2022-12-14 11:05:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97145 states to 97145 states and 154210 transitions. [2022-12-14 11:05:01,851 INFO L78 Accepts]: Start accepts. Automaton has 97145 states and 154210 transitions. Word has length 143 [2022-12-14 11:05:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:05:01,851 INFO L495 AbstractCegarLoop]: Abstraction has 97145 states and 154210 transitions. [2022-12-14 11:05:01,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:05:01,852 INFO L276 IsEmpty]: Start isEmpty. Operand 97145 states and 154210 transitions. [2022-12-14 11:05:02,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-14 11:05:02,001 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:02,001 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:02,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 11:05:02,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 11:05:02,203 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:05:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash 584922311, now seen corresponding path program 1 times [2022-12-14 11:05:02,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:05:02,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696805102] [2022-12-14 11:05:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:05:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 11:05:02,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:05:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696805102] [2022-12-14 11:05:02,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696805102] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:05:02,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:05:02,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 11:05:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138399710] [2022-12-14 11:05:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:05:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 11:05:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:05:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 11:05:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:05:02,310 INFO L87 Difference]: Start difference. First operand 97145 states and 154210 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:05:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:05:08,878 INFO L93 Difference]: Finished difference Result 192168 states and 305321 transitions. [2022-12-14 11:05:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 11:05:08,879 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 152 [2022-12-14 11:05:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:05:09,143 INFO L225 Difference]: With dead ends: 192168 [2022-12-14 11:05:09,143 INFO L226 Difference]: Without dead ends: 97150 [2022-12-14 11:05:09,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 11:05:09,268 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 54 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:05:09,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 432 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 11:05:09,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97150 states. [2022-12-14 11:05:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97150 to 97145. [2022-12-14 11:05:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97145 states, 75331 states have (on average 1.4484209687910687) internal successors, (109111), 75331 states have internal predecessors, (109111), 21784 states have call successors, (21784), 30 states have call predecessors, (21784), 29 states have return successors, (21783), 21783 states have call predecessors, (21783), 21783 states have call successors, (21783) [2022-12-14 11:05:16,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97145 states to 97145 states and 152678 transitions. [2022-12-14 11:05:16,611 INFO L78 Accepts]: Start accepts. Automaton has 97145 states and 152678 transitions. Word has length 152 [2022-12-14 11:05:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:05:16,611 INFO L495 AbstractCegarLoop]: Abstraction has 97145 states and 152678 transitions. [2022-12-14 11:05:16,611 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 11:05:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 97145 states and 152678 transitions. [2022-12-14 11:05:16,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-14 11:05:16,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:05:16,775 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:05:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 11:05:16,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:05:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:05:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1109435040, now seen corresponding path program 1 times [2022-12-14 11:05:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:05:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932609264] [2022-12-14 11:05:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:16,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:05:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-14 11:05:18,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:05:18,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932609264] [2022-12-14 11:05:18,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932609264] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:05:18,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558966667] [2022-12-14 11:05:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:05:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:05:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:05:18,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:05:18,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 11:05:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:05:19,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 214 conjunts are in the unsatisfiable core [2022-12-14 11:05:19,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:05:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-14 11:05:21,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:05:25,480 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 11:05:25,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558966667] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:05:25,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804596462] [2022-12-14 11:05:25,484 INFO L159 IcfgInterpreter]: Started Sifa with 108 locations of interest [2022-12-14 11:05:25,484 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:05:25,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:05:25,485 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:05:25,485 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 11:06:35,000 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-12-14 11:06:35,310 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 468 for LOIs [2022-12-14 11:07:25,712 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-12-14 11:07:26,014 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 415 for LOIs [2022-12-14 11:08:11,824 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 218 for LOIs [2022-12-14 11:08:11,849 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 217 for LOIs [2022-12-14 11:08:11,885 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 405 for LOIs [2022-12-14 11:08:12,391 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 219 for LOIs [2022-12-14 11:08:12,424 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 222 for LOIs [2022-12-14 11:08:12,460 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 221 for LOIs [2022-12-14 11:08:12,496 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 218 for LOIs [2022-12-14 11:08:12,528 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailSignKey with input of size 219 for LOIs [2022-12-14 11:08:12,560 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 11:09:15,609 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 569 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:09:22,375 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 565 DAG size of output: 426 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:12:23,437 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 705 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:12:32,611 WARN L233 SmtUtils]: Spent 7.20s on a formula simplification. DAG size of input: 713 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:12:41,417 WARN L233 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 718 DAG size of output: 547 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:12:59,561 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 780 DAG size of output: 642 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 11:13:26,548 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2093883#(and (<= |outgoing_outgoing__wrappee__Keys_~msg#1| 2147483647) (= ~__ste_Client_Keyring1_User2~0 0) (<= |outgoing_sign_#in~msg#1| 2147483647) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= ~queued_message~0 2147483647) (<= 0 (+ |outgoing_~msg#1| 2147483648)) (<= |outgoing_outgoing__wrappee__Keys_~tmp~9#1| 2147483647) (= ~__ste_email_isEncrypted1~0 0) (= ~__ste_email_subject0~0.offset 0) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_~client#1|) (<= 1 |outgoing_mail_#in~client#1|) (<= 0 (+ 2147483648 |outgoing_getClientId_#res#1|)) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= ~queued_client~0 3) (<= ~__ste_client_forwardReceiver0~0 0) (= ~__ste_client_autoResponse1~0 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= 1 |outgoing_sign_~client#1|) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 0 (+ 2147483648 |outgoing___utac_acc__SignForward_spec__1_~msg#1|)) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483648)) (= ~__ste_client_name2~0.offset 0) (= ~__ste_client_name1~0.base 0) (<= 0 (+ |outgoing___utac_acc__SignForward_spec__1_~tmp___0~0#1| 2147483648)) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing_outgoing__wrappee__Keys_#in~client#1| 3) (<= ~__ste_client_idCounter2~0 3) (<= 0 (+ |outgoing_sign_~privkey~0#1| 2147483648)) (= ~__ste_email_body1~0.offset 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= |outgoing_sign_~msg#1| 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= |outgoing_sign_~privkey~0#1| 2147483647) (= ~__ste_Email_counter~0 0) (<= 1 |outgoing___utac_acc__SignForward_spec__1_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (<= |outgoing_sign_~tmp~13#1| 2147483647) (<= 1 |outgoing_~client#1|) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~tmp___0~0#1| 2147483647) (= ~__ste_client_name1~0.offset 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~msg#1| 2147483647) (<= |outgoing_outgoing__wrappee__Keys_#in~msg#1| 2147483647) (<= |outgoing_getClientId_#res#1| 2147483647) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~tmp~9#1| 2147483648)) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 1 |outgoing_outgoing__wrappee__Keys_~client#1|) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= ~queue_empty~0 1) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing_getClientId_~handle#1|) (<= 0 (+ ~queued_message~0 2147483648)) (<= 0 (+ |outgoing_mail_~msg#1| 2147483648)) (= ~__ste_email_encryptionKey0~0 0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 (+ |outgoing_mail_#in~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_AddressBook~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 |old(~queue_empty~0)|) (= ~__SELECTED_FEATURE_Forward~0 0) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (= ~__ste_email_body0~0.base 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (= ~__ste_email_id0~0 0) (<= |outgoing_mail_~__utac__ad__arg2~0#1| 2147483647) (<= 0 (+ |outgoing_mail_~__utac__ad__arg2~0#1| 2147483648)) (<= 0 ~queue_empty~0) (= ~__ste_Client_Keyring2_User1~0 0) (<= 1 |outgoing_mail_~__utac__ad__arg1~0#1|) (<= 3 ~__ste_client_idCounter2~0) (<= |outgoing_mail_~client#1| 3) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing_getClientId_~handle#1| 3) (= 3 ~chuck~0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_~msg#1| 2147483648)) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= |outgoing___utac_acc__SignForward_spec__1_~msg#1| 2147483647) (<= |old(~queued_client~0)| 3) (= ~bob~0 1) (<= |outgoing_getClientId_#in~handle#1| 3) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= 1 |outgoing_sign_#in~client#1|) (<= |outgoing_#in~msg#1| 2147483647) (<= 0 (+ |outgoing_sign_~msg#1| 2147483648)) (= ~__SELECTED_FEATURE_Base~0 0) (<= 0 (+ |old(~queued_message~0)| 2147483648)) (<= |outgoing_~client#1| 3) (= ~__ste_Client_Keyring2_User0~0 0) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= 0 ~__ste_client_forwardReceiver0~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= |outgoing_#in~client#1| 3) (<= 0 |old(~queued_client~0)|) (<= 0 (+ 2147483648 |outgoing_sign_~tmp~13#1|)) (= ~__ste_email_subject1~0.base 0) (<= |outgoing_mail_~msg#1| 2147483647) (<= |old(~queue_empty~0)| 1) (<= |outgoing_mail_#in~msg#1| 2147483647) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= |outgoing_outgoing__wrappee__Keys_~client#1| 3) (<= 0 (+ |outgoing_#in~msg#1| 2147483648)) (= ~__ste_Client_Keyring2_User2~0 0) (= ~head~0.base 0) (= ~__ste_Client_Keyring1_User1~0 0) (= |#NULL.offset| 0) (<= |outgoing_~msg#1| 2147483647) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing_getClientId_~retValue_acc~31#1| 2147483647) (<= |old(~queued_message~0)| 2147483647) (<= |outgoing_mail_#in~client#1| 3) (= ~__ste_email_subject1~0.offset 0) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 0 (+ |outgoing_outgoing__wrappee__Keys_#in~msg#1| 2147483648)) (= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= 0 (+ |outgoing_sign_#in~msg#1| 2147483648)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 1 |outgoing_getClientId_#in~handle#1|) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= 1 |outgoing_#in~client#1|) (<= 0 ~__ste_client_forwardReceiver1~0) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (<= |outgoing_sign_~client#1| 3) (= ~__ste_client_outbuffer2~0 0) (<= 1 |outgoing_outgoing__wrappee__Keys_#in~client#1|) (<= |outgoing_mail_~__utac__ad__arg1~0#1| 3) (<= ~__ste_client_forwardReceiver2~0 0) (<= 0 |#StackHeapBarrier|) (<= 1 |outgoing_mail_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (= ~__ste_email_encryptionKey1~0 0) (<= 0 (+ |outgoing_getClientId_~retValue_acc~31#1| 2147483648)) (<= |outgoing___utac_acc__SignForward_spec__1_~client#1| 3) (= ~__ste_client_autoResponse0~0 0) (= ~__ste_email_body1~0.base 0) (= ~__ste_ClientKeyring_size2~0 0) (= ~__ste_client_autoResponse2~0 0) (<= |outgoing_sign_#in~client#1| 3) (= |#NULL.base| 0) (<= |outgoing___utac_acc__SignForward_spec__1_#in~client#1| 3) (= |outgoing___utac_acc__SignForward_spec__1_~tmp~0#1| 0))' at error location [2022-12-14 11:13:26,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 11:13:26,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:13:26,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 41, 31] total 96 [2022-12-14 11:13:26,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653266850] [2022-12-14 11:13:26,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:13:26,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 11:13:26,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:26,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 11:13:26,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=33553, Unknown=0, NotChecked=0, Total=35156 [2022-12-14 11:13:26,558 INFO L87 Difference]: Start difference. First operand 97145 states and 152678 transitions. Second operand has 96 states, 62 states have (on average 3.1129032258064515) internal successors, (193), 75 states have internal predecessors, (193), 43 states have call successors, (78), 10 states have call predecessors, (78), 24 states have return successors, (75), 43 states have call predecessors, (75), 41 states have call successors, (75) [2022-12-14 11:13:45,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:13:45,429 INFO L93 Difference]: Finished difference Result 97205 states and 152748 transitions. [2022-12-14 11:13:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-12-14 11:13:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 62 states have (on average 3.1129032258064515) internal successors, (193), 75 states have internal predecessors, (193), 43 states have call successors, (78), 10 states have call predecessors, (78), 24 states have return successors, (75), 43 states have call predecessors, (75), 41 states have call successors, (75) Word has length 156 [2022-12-14 11:13:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:13:45,719 INFO L225 Difference]: With dead ends: 97205 [2022-12-14 11:13:45,719 INFO L226 Difference]: Without dead ends: 97149 [2022-12-14 11:13:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 311 SyntacticMatches, 8 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20768 ImplicationChecksByTransitivity, 324.5s TimeCoverageRelationStatistics Valid=2893, Invalid=57377, Unknown=0, NotChecked=0, Total=60270 [2022-12-14 11:13:45,768 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1058 mSDsluCounter, 5590 mSDsCounter, 0 mSdLazyCounter, 10065 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 5735 SdHoareTripleChecker+Invalid, 10826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 10065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 11:13:45,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 5735 Invalid, 10826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [761 Valid, 10065 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 11:13:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97149 states. [2022-12-14 11:13:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97149 to 97149. [2022-12-14 11:13:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97149 states, 75333 states have (on average 1.4483957893618997) internal successors, (109112), 75333 states have internal predecessors, (109112), 21784 states have call successors, (21784), 32 states have call predecessors, (21784), 31 states have return successors, (21783), 21783 states have call predecessors, (21783), 21783 states have call successors, (21783) [2022-12-14 11:13:54,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97149 states to 97149 states and 152679 transitions. [2022-12-14 11:13:54,623 INFO L78 Accepts]: Start accepts. Automaton has 97149 states and 152679 transitions. Word has length 156 [2022-12-14 11:13:54,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:13:54,623 INFO L495 AbstractCegarLoop]: Abstraction has 97149 states and 152679 transitions. [2022-12-14 11:13:54,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 62 states have (on average 3.1129032258064515) internal successors, (193), 75 states have internal predecessors, (193), 43 states have call successors, (78), 10 states have call predecessors, (78), 24 states have return successors, (75), 43 states have call predecessors, (75), 41 states have call successors, (75) [2022-12-14 11:13:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 97149 states and 152679 transitions. [2022-12-14 11:13:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-14 11:13:54,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:13:54,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:13:54,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 11:13:55,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:55,007 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:13:55,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:13:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1613111840, now seen corresponding path program 1 times [2022-12-14 11:13:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:13:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646792185] [2022-12-14 11:13:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:13:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-14 11:13:55,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:13:55,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646792185] [2022-12-14 11:13:55,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646792185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:13:55,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211969346] [2022-12-14 11:13:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:13:55,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:13:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:13:55,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:13:55,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 11:13:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:13:55,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-14 11:13:55,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:13:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 11:13:56,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:13:56,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211969346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:13:56,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 11:13:56,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [19] total 33 [2022-12-14 11:13:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729409255] [2022-12-14 11:13:56,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:13:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 11:13:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 11:13:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 11:13:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 11:13:56,416 INFO L87 Difference]: Start difference. First operand 97149 states and 152679 transitions. Second operand has 16 states, 12 states have (on average 7.25) internal successors, (87), 14 states have internal predecessors, (87), 9 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-12-14 11:14:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:14:04,370 INFO L93 Difference]: Finished difference Result 97203 states and 152732 transitions. [2022-12-14 11:14:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 11:14:04,371 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 7.25) internal successors, (87), 14 states have internal predecessors, (87), 9 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 161 [2022-12-14 11:14:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:14:04,600 INFO L225 Difference]: With dead ends: 97203 [2022-12-14 11:14:04,600 INFO L226 Difference]: Without dead ends: 97151 [2022-12-14 11:14:04,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=2020, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 11:14:04,624 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 172 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 11:14:04,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 1887 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 11:14:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97151 states. [2022-12-14 11:14:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97151 to 97151. [2022-12-14 11:14:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97151 states, 75334 states have (on average 1.448376563039265) internal successors, (109112), 75334 states have internal predecessors, (109112), 21784 states have call successors, (21784), 33 states have call predecessors, (21784), 32 states have return successors, (21783), 21783 states have call predecessors, (21783), 21783 states have call successors, (21783) [2022-12-14 11:14:12,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97151 states to 97151 states and 152679 transitions. [2022-12-14 11:14:12,826 INFO L78 Accepts]: Start accepts. Automaton has 97151 states and 152679 transitions. Word has length 161 [2022-12-14 11:14:12,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:14:12,826 INFO L495 AbstractCegarLoop]: Abstraction has 97151 states and 152679 transitions. [2022-12-14 11:14:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 7.25) internal successors, (87), 14 states have internal predecessors, (87), 9 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-12-14 11:14:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 97151 states and 152679 transitions. [2022-12-14 11:14:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-14 11:14:13,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:14:13,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:14:13,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 11:14:13,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 11:14:13,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 11:14:13,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:14:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash 921840070, now seen corresponding path program 1 times [2022-12-14 11:14:13,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 11:14:13,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462254874] [2022-12-14 11:14:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 11:14:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 11:14:14,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 11:14:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462254874] [2022-12-14 11:14:14,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462254874] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:14:14,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945122946] [2022-12-14 11:14:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:14:14,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:14:14,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:14:14,921 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:14:14,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8208b339-f294-42f8-bb4c-85a18ccfbc83/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 11:14:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:14:15,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 158 conjunts are in the unsatisfiable core [2022-12-14 11:14:15,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:14:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 11:14:17,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:14:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 11:14:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945122946] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:14:27,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [591483346] [2022-12-14 11:14:27,230 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2022-12-14 11:14:27,230 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 11:14:27,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 11:14:27,231 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 11:14:27,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs