./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0684811b66680ff9a661ea21879b3502eab6dd1ae141cb77fa167c05dd5b0ff9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:44:29,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:44:29,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:44:29,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:44:29,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:44:29,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:44:29,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:44:29,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:44:29,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:44:29,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:44:29,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:44:29,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:44:29,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:44:29,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:44:29,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:44:29,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:44:29,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:44:29,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:44:29,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:44:29,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:44:29,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:44:29,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:44:29,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:44:29,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:44:29,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:44:29,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:44:29,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:44:29,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:44:29,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:44:29,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:44:29,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:44:29,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:44:29,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:44:29,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:44:29,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:44:29,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:44:29,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:44:29,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:44:29,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:44:29,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:44:29,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:44:29,125 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:44:29,163 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:44:29,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:44:29,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:44:29,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:44:29,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:44:29,166 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:44:29,166 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:44:29,166 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:44:29,167 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:44:29,167 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:44:29,168 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:44:29,168 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:44:29,168 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:44:29,169 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:44:29,169 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:44:29,169 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:44:29,169 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:44:29,170 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:44:29,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:44:29,171 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:44:29,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:44:29,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:44:29,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:44:29,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:44:29,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:44:29,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:44:29,173 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:44:29,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:44:29,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:44:29,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:44:29,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:44:29,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:44:29,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:44:29,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:44:29,175 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:44:29,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:44:29,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:44:29,175 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:44:29,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:44:29,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:44:29,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:44:29,176 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_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0684811b66680ff9a661ea21879b3502eab6dd1ae141cb77fa167c05dd5b0ff9 [2022-11-23 13:44:29,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:44:29,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:44:29,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:44:29,496 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:44:29,497 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:44:29,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec4_product35.cil.c [2022-11-23 13:44:32,512 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:44:32,984 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:44:32,985 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/sv-benchmarks/c/product-lines/email_spec4_product35.cil.c [2022-11-23 13:44:33,001 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/data/b0e05c6b0/97c8f7da652c4a809e21f039c0070bf7/FLAG067bc28eb [2022-11-23 13:44:33,024 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/data/b0e05c6b0/97c8f7da652c4a809e21f039c0070bf7 [2022-11-23 13:44:33,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:44:33,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:44:33,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:44:33,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:44:33,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:44:33,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:44:33" (1/1) ... [2022-11-23 13:44:33,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@422282f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:33, skipping insertion in model container [2022-11-23 13:44:33,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:44:33" (1/1) ... [2022-11-23 13:44:33,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:44:33,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:44:33,302 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_2b1071e6-d332-44ca-a007-f181b44e2e76/sv-benchmarks/c/product-lines/email_spec4_product35.cil.c[1542,1555] [2022-11-23 13:44:33,825 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:44:33,841 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:44:33,863 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_2b1071e6-d332-44ca-a007-f181b44e2e76/sv-benchmarks/c/product-lines/email_spec4_product35.cil.c[1542,1555] [2022-11-23 13:44:33,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:44:34,034 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:44:34,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34 WrapperNode [2022-11-23 13:44:34,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:44:34,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:44:34,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:44:34,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:44:34,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,134 INFO L138 Inliner]: procedures = 137, calls = 247, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1148 [2022-11-23 13:44:34,135 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:44:34,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:44:34,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:44:34,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:44:34,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,203 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:44:34,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:44:34,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:44:34,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:44:34,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (1/1) ... [2022-11-23 13:44:34,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:44:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:44:34,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:44:34,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:44:34,307 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 13:44:34,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 13:44:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-23 13:44:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-23 13:44:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 13:44:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 13:44:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-23 13:44:34,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-23 13:44:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 13:44:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 13:44:34,309 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 13:44:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 13:44:34,309 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-23 13:44:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-23 13:44:34,309 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 13:44:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 13:44:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 13:44:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 13:44:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 13:44:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 13:44:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 13:44:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 13:44:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 13:44:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 13:44:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 13:44:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 13:44:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 13:44:34,311 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 13:44:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 13:44:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-23 13:44:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-23 13:44:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 13:44:34,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 13:44:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:44:34,312 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 13:44:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 13:44:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 13:44:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 13:44:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-23 13:44:34,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-23 13:44:34,313 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 13:44:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 13:44:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 13:44:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 13:44:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 13:44:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 13:44:34,314 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 13:44:34,314 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 13:44:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 13:44:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 13:44:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 13:44:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 13:44:34,315 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 13:44:34,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 13:44:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 13:44:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 13:44:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:44:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 13:44:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 13:44:34,316 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-23 13:44:34,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-23 13:44:34,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:44:34,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:44:34,610 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:44:34,612 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:44:35,714 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:44:36,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:44:36,446 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 13:44:36,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:36 BoogieIcfgContainer [2022-11-23 13:44:36,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:44:36,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:44:36,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:44:36,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:44:36,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:44:33" (1/3) ... [2022-11-23 13:44:36,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429d34da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:44:36, skipping insertion in model container [2022-11-23 13:44:36,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:44:34" (2/3) ... [2022-11-23 13:44:36,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429d34da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:44:36, skipping insertion in model container [2022-11-23 13:44:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:44:36" (3/3) ... [2022-11-23 13:44:36,467 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product35.cil.c [2022-11-23 13:44:36,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:44:36,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:44:36,563 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:44:36,572 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;@53aeb3fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:44:36,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:44:36,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:44:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 13:44:36,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:44:36,598 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] [2022-11-23 13:44:36,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:44:36,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:44:36,608 INFO L85 PathProgramCache]: Analyzing trace with hash 169797557, now seen corresponding path program 1 times [2022-11-23 13:44:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:44:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663030157] [2022-11-23 13:44:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:44:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:44:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:44:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:44:37,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:44:37,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663030157] [2022-11-23 13:44:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663030157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:44:37,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:44:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:44:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561902809] [2022-11-23 13:44:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:44:37,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:44:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:44:37,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:44:37,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:44:37,160 INFO L87 Difference]: Start difference. First operand has 242 states, 136 states have (on average 1.286764705882353) internal successors, (175), 141 states have internal predecessors, (175), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:44:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:44:37,388 INFO L93 Difference]: Finished difference Result 392 states and 521 transitions. [2022-11-23 13:44:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:44:37,397 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 75 [2022-11-23 13:44:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:44:37,413 INFO L225 Difference]: With dead ends: 392 [2022-11-23 13:44:37,413 INFO L226 Difference]: Without dead ends: 239 [2022-11-23 13:44:37,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:44:37,422 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:44:37,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:44:37,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-23 13:44:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-23 13:44:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 138 states have internal predecessors, (169), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-23 13:44:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 318 transitions. [2022-11-23 13:44:37,483 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 318 transitions. Word has length 75 [2022-11-23 13:44:37,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:44:37,485 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 318 transitions. [2022-11-23 13:44:37,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:44:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 318 transitions. [2022-11-23 13:44:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 13:44:37,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:44:37,490 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] [2022-11-23 13:44:37,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:44:37,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:44:37,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:44:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 736056443, now seen corresponding path program 1 times [2022-11-23 13:44:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:44:37,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868802794] [2022-11-23 13:44:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:44:37,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:44:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:44:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:44:37,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:44:37,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868802794] [2022-11-23 13:44:37,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868802794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:44:37,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:44:37,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:44:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812929470] [2022-11-23 13:44:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:44:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:44:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:44:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:44:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:44:37,838 INFO L87 Difference]: Start difference. First operand 239 states and 318 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:44:38,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:44:38,068 INFO L93 Difference]: Finished difference Result 388 states and 506 transitions. [2022-11-23 13:44:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:44:38,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 76 [2022-11-23 13:44:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:44:38,078 INFO L225 Difference]: With dead ends: 388 [2022-11-23 13:44:38,079 INFO L226 Difference]: Without dead ends: 241 [2022-11-23 13:44:38,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:44:38,087 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:44:38,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:44:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-23 13:44:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2022-11-23 13:44:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 140 states have internal predecessors, (171), 75 states have call successors, (75), 29 states have call predecessors, (75), 29 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2022-11-23 13:44:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 320 transitions. [2022-11-23 13:44:38,129 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 320 transitions. Word has length 76 [2022-11-23 13:44:38,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:44:38,130 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 320 transitions. [2022-11-23 13:44:38,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:44:38,130 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 320 transitions. [2022-11-23 13:44:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 13:44:38,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:44:38,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:44:38,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:44:38,143 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:44:38,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:44:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash 119749420, now seen corresponding path program 1 times [2022-11-23 13:44:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:44:38,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780703728] [2022-11-23 13:44:38,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:44:38,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:44:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:44:38,374 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:44:38,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:44:38,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780703728] [2022-11-23 13:44:38,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780703728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:44:38,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:44:38,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:44:38,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944028277] [2022-11-23 13:44:38,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:44:38,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:44:38,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:44:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:44:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:44:38,381 INFO L87 Difference]: Start difference. First operand 241 states and 320 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:44:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:44:38,565 INFO L93 Difference]: Finished difference Result 517 states and 707 transitions. [2022-11-23 13:44:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:44:38,566 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-23 13:44:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:44:38,568 INFO L225 Difference]: With dead ends: 517 [2022-11-23 13:44:38,569 INFO L226 Difference]: Without dead ends: 294 [2022-11-23 13:44:38,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:44:38,573 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 59 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:44:38,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 558 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:44:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-23 13:44:38,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 289. [2022-11-23 13:44:38,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 174 states have internal predecessors, (226), 89 states have call successors, (89), 29 states have call predecessors, (89), 29 states have return successors, (88), 87 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-23 13:44:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 403 transitions. [2022-11-23 13:44:38,605 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 403 transitions. Word has length 81 [2022-11-23 13:44:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:44:38,605 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 403 transitions. [2022-11-23 13:44:38,606 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:44:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 403 transitions. [2022-11-23 13:44:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 13:44:38,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:44:38,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:44:38,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:44:38,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:44:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:44:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2009741288, now seen corresponding path program 1 times [2022-11-23 13:44:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:44:38,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883595434] [2022-11-23 13:44:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:44:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:44:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:44:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:44:38,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:44:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883595434] [2022-11-23 13:44:38,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883595434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:44:38,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139550888] [2022-11-23 13:44:38,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:44:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:44:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:44:38,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:44:38,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:44:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:44:39,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:44:39,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:44:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:44:39,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:44:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:44:39,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139550888] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:44:39,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1226527803] [2022-11-23 13:44:39,453 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 13:44:39,453 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:44:39,457 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:44:39,463 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:44:39,463 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:45:12,211 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-23 13:45:12,506 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 264 for LOIs [2022-11-23 13:45:14,687 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 234 for LOIs [2022-11-23 13:45:14,754 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-23 13:45:15,068 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 266 for LOIs [2022-11-23 13:45:18,394 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 274 for LOIs [2022-11-23 13:45:28,637 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 451 for LOIs [2022-11-23 13:45:29,207 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 246 for LOIs [2022-11-23 13:45:29,276 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 243 for LOIs [2022-11-23 13:45:29,315 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 474 for LOIs [2022-11-23 13:45:32,461 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 248 for LOIs [2022-11-23 13:45:32,500 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 251 for LOIs [2022-11-23 13:45:32,544 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:45:41,887 WARN L233 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 553 DAG size of output: 455 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:46:20,946 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 486 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:46:28,411 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 498 DAG size of output: 376 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:46:41,819 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 563 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:46:47,402 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 565 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:46:53,501 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 567 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:46:59,576 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 563 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:47:17,269 WARN L233 SmtUtils]: Spent 12.79s on a formula simplification. DAG size of input: 474 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:47:47,168 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 451 DAG size of output: 343 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:47:59,124 WARN L233 SmtUtils]: Spent 11.41s on a formula simplification. DAG size of input: 477 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:48:30,740 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 474 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:48:38,305 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 476 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:48:47,294 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 518 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:49:02,992 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 546 DAG size of output: 423 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:49:11,565 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 546 DAG size of output: 420 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:49:24,456 WARN L233 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 553 DAG size of output: 406 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:49:30,229 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4121#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (<= ~__ste_Client_Keyring0_PublicKey1~0 0) (<= 0 ~__ste_Client_AddressBook2_Address2~0) (<= 0 ~__SELECTED_FEATURE_Base~0) (<= |old(~__ste_email_isEncrypted1~0)| 0) (<= ~head~0.offset 0) (<= ~__ste_Client_AddressBook1_Alias1~0 0) (<= 0 ~__ste_Client_Keyring2_User0~0) (<= 0 ~__ste_Client_Keyring0_User1~0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (<= ~__ste_Client_AddressBook1_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (<= ~__ste_email_subject1~0.base 0) (<= ~__ste_client_name2~0.base 0) (<= ~__ste_Client_AddressBook0_Alias0~0 0) (<= ~__ste_email_body0~0.offset 0) (<= ~__ste_client_name1~0.offset 0) (<= 0 |#NULL.base|) (<= ~__ste_ClientAddressBook_size2~0 0) (<= ~__ste_client_outbuffer3~0 0) (<= ~__ste_Client_Keyring1_User1~0 0) (<= 0 ~__ste_email_body1~0.base) (<= ~__ste_Client_counter~0 0) (<= ~__ste_ClientKeyring_size2~0 0) (<= ~__SELECTED_FEATURE_Sign~0 0) (<= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~pubkey~0#1|) (<= 0 ~__ste_Client_AddressBook2_Alias2~0) (<= ~__ste_client_forwardReceiver0~0 0) (<= 0 ~__ste_Client_Keyring2_PublicKey1~0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= 0 ~__ste_email_subject0~0.base) (<= ~__ste_email_subject1~0.offset 0) (<= ~__ste_Client_AddressBook2_Alias0~0 0) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (<= 0 ~__ste_Client_AddressBook1_Address1~0) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (<= ~__ste_Client_Keyring0_User0~0 0) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1|) (<= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey2~0) (<= 0 ~__ste_ClientAddressBook_size0~0) (<= 2 ~rjh~0) (<= 0 ~__SELECTED_FEATURE_Encrypt~0) (<= 0 ~__ste_client_autoResponse1~0) (<= 0 ~__ste_client_outbuffer0~0) (<= |old(~queued_client~0)| 0) (<= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= 0 ~head~0.offset) (<= ~chuck~0 3) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= 0 ~__ste_client_outbuffer1~0) (<= 0 ~__ste_ClientAddressBook_size1~0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~15#1| 2147483648)) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= ~__ste_email_isSignatureVerified0~0 0) (<= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_client_name0~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Alias1~0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= 0 ~__ste_Client_Keyring0_User0~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (<= 0 ~__SELECTED_FEATURE_AutoResponder~0) (<= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~6#1|) (<= 0 ~__ste_email_isSigned1~0) (<= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~15#1| 2147483647) (= ~__ste_Client_Keyring0_User2~0 0) (<= 0 ~__ste_ClientKeyring_size2~0) (<= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (<= 0 ~__ste_Client_Keyring1_User1~0) (<= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 0 ~__ste_ClientAddressBook_size2~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 0 ~__SELECTED_FEATURE_Sign~0) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_email_subject0~0.base 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= 0 ~__SELECTED_FEATURE_Decrypt~0) (<= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~16#1|) (<= |outgoing__wrappee__AutoResponder_~tmp~16#1| 2) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_subject1~0.offset) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__ste_Client_counter~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 0 ~__ste_Client_Keyring0_PublicKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (<= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= 0 ~__ste_Client_AddressBook1_Address0~0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_Client_AddressBook1_Alias1~0) (<= ~__ste_client_autoResponse0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= 0 ~__ste_Client_AddressBook0_Alias0~0) (<= 0 ~__ste_Client_Keyring2_PublicKey0~0) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= ~__ste_ClientAddressBook_size0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_client_name0~0.base) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~26#1| 0) (<= 0 ~__ste_client_autoResponse0~0) (<= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1| 1) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 0 ~__ste_email_body0~0.offset) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (<= 0 ~__ste_Client_Keyring1_PublicKey1~0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~6#1| 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (<= 0 ~queued_client~0) (<= 0 ~__ste_client_forwardReceiver0~0) (<= 0 ~__SELECTED_FEATURE_Keys~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey0~0) (<= 0 ~__ste_email_isSignatureVerified0~0) (<= 0 ~__ste_email_subject1~0.base) (<= 0 ~__ste_ClientKeyring_size1~0) (<= |#NULL.base| 0) (<= 0 ~__ste_client_forwardReceiver2~0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |old(~__ste_email_encryptionKey1~0)| 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= |old(~queue_empty~0)| 1) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= ~__ste_client_outbuffer0~0 0) (<= ~__ste_Client_Keyring0_User1~0 0) (<= ~head~0.base 0) (<= 0 ~__ste_client_name1~0.offset) (<= ~__ste_client_forwardReceiver1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~10#1| 0)) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (<= ~__ste_client_name0~0.offset 0) (<= 0 ~__ste_client_outbuffer3~0) (<= 0 ~__ste_client_name2~0.base) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (= ~__ste_client_privateKey0~0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~26#1|) (<= ~rjh~0 2) (<= ~__ste_Client_AddressBook1_Address1~0 0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 ~__ste_Client_AddressBook2_Alias0~0) (<= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (<= 0 ~__ste_Client_Keyring2_PublicKey2~0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= ~__ste_Client_Keyring2_User0~0 0) (<= 0 ~__GUIDSL_NON_TERMINAL_main~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (<= 3 ~chuck~0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~30#1| 2147483648)) (<= ~__ste_client_autoResponse2~0 0) (<= 1 ~bob~0) (<= ~__ste_client_outbuffer1~0 0) (<= ~__ste_ClientAddressBook_size1~0 0) (<= 0 ~__ste_client_name1~0.base) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~30#1| 2147483647) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (<= ~__ste_email_body1~0.base 0) (<= ~queued_client~0 0))' at error location [2022-11-23 13:49:30,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:49:30,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:49:30,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 13:49:30,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399454241] [2022-11-23 13:49:30,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:49:30,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:49:30,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:49:30,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 13:49:30,234 INFO L87 Difference]: Start difference. First operand 289 states and 403 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 13:49:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:30,672 INFO L93 Difference]: Finished difference Result 711 states and 1056 transitions. [2022-11-23 13:49:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:49:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 82 [2022-11-23 13:49:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:30,680 INFO L225 Difference]: With dead ends: 711 [2022-11-23 13:49:30,681 INFO L226 Difference]: Without dead ends: 564 [2022-11-23 13:49:30,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 237.6s TimeCoverageRelationStatistics Valid=191, Invalid=4231, Unknown=0, NotChecked=0, Total=4422 [2022-11-23 13:49:30,686 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 175 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:30,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1546 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:49:30,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-11-23 13:49:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 549. [2022-11-23 13:49:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 351 states have (on average 1.4586894586894588) internal successors, (512), 355 states have internal predecessors, (512), 168 states have call successors, (168), 29 states have call predecessors, (168), 29 states have return successors, (167), 166 states have call predecessors, (167), 167 states have call successors, (167) [2022-11-23 13:49:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 847 transitions. [2022-11-23 13:49:30,744 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 847 transitions. Word has length 82 [2022-11-23 13:49:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:30,746 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 847 transitions. [2022-11-23 13:49:30,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-23 13:49:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 847 transitions. [2022-11-23 13:49:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 13:49:30,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:30,752 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:30,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:49:30,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1071e6-d332-44ca-a007-f181b44e2e76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:49:30,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:30,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:30,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1578340291, now seen corresponding path program 1 times [2022-11-23 13:49:30,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:30,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333362104] [2022-11-23 13:49:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:30,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:31,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333362104] [2022-11-23 13:49:31,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333362104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:31,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:31,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285624974] [2022-11-23 13:49:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:31,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:31,071 INFO L87 Difference]: Start difference. First operand 549 states and 847 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:31,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:31,222 INFO L93 Difference]: Finished difference Result 1328 states and 2092 transitions. [2022-11-23 13:49:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:31,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 88 [2022-11-23 13:49:31,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:31,227 INFO L225 Difference]: With dead ends: 1328 [2022-11-23 13:49:31,228 INFO L226 Difference]: Without dead ends: 811 [2022-11-23 13:49:31,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:31,230 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 57 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:31,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 568 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-11-23 13:49:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 806. [2022-11-23 13:49:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 529 states have (on average 1.4839319470699432) internal successors, (785), 533 states have internal predecessors, (785), 247 states have call successors, (247), 29 states have call predecessors, (247), 29 states have return successors, (246), 245 states have call predecessors, (246), 246 states have call successors, (246) [2022-11-23 13:49:31,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1278 transitions. [2022-11-23 13:49:31,279 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1278 transitions. Word has length 88 [2022-11-23 13:49:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:31,280 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1278 transitions. [2022-11-23 13:49:31,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1278 transitions. [2022-11-23 13:49:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 13:49:31,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:31,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:31,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:49:31,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:31,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1713515682, now seen corresponding path program 1 times [2022-11-23 13:49:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:31,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014731650] [2022-11-23 13:49:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:31,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:31,372 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:31,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:31,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014731650] [2022-11-23 13:49:31,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014731650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:31,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:31,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:31,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768784120] [2022-11-23 13:49:31,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:31,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:31,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:31,374 INFO L87 Difference]: Start difference. First operand 806 states and 1278 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:31,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:31,549 INFO L93 Difference]: Finished difference Result 1950 states and 3139 transitions. [2022-11-23 13:49:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:31,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 89 [2022-11-23 13:49:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:31,557 INFO L225 Difference]: With dead ends: 1950 [2022-11-23 13:49:31,557 INFO L226 Difference]: Without dead ends: 1206 [2022-11-23 13:49:31,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:31,561 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 55 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:31,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 556 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2022-11-23 13:49:31,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1201. [2022-11-23 13:49:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 805 states have (on average 1.4968944099378882) internal successors, (1205), 809 states have internal predecessors, (1205), 366 states have call successors, (366), 29 states have call predecessors, (366), 29 states have return successors, (365), 364 states have call predecessors, (365), 365 states have call successors, (365) [2022-11-23 13:49:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1936 transitions. [2022-11-23 13:49:31,634 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1936 transitions. Word has length 89 [2022-11-23 13:49:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:31,634 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1936 transitions. [2022-11-23 13:49:31,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:31,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1936 transitions. [2022-11-23 13:49:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 13:49:31,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:31,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:31,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:49:31,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash -574963633, now seen corresponding path program 1 times [2022-11-23 13:49:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210033181] [2022-11-23 13:49:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:31,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:31,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:31,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210033181] [2022-11-23 13:49:31,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210033181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:31,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:31,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:31,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198837747] [2022-11-23 13:49:31,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:31,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:31,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:31,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:31,728 INFO L87 Difference]: Start difference. First operand 1201 states and 1936 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:31,942 INFO L93 Difference]: Finished difference Result 2853 states and 4651 transitions. [2022-11-23 13:49:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:31,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 90 [2022-11-23 13:49:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:31,953 INFO L225 Difference]: With dead ends: 2853 [2022-11-23 13:49:31,953 INFO L226 Difference]: Without dead ends: 1794 [2022-11-23 13:49:31,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:31,958 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 53 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:31,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 549 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-11-23 13:49:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1789. [2022-11-23 13:49:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1789 states, 1231 states have (on average 1.5052802599512591) internal successors, (1853), 1235 states have internal predecessors, (1853), 528 states have call successors, (528), 29 states have call predecessors, (528), 29 states have return successors, (527), 526 states have call predecessors, (527), 527 states have call successors, (527) [2022-11-23 13:49:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1789 states to 1789 states and 2908 transitions. [2022-11-23 13:49:32,078 INFO L78 Accepts]: Start accepts. Automaton has 1789 states and 2908 transitions. Word has length 90 [2022-11-23 13:49:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:32,078 INFO L495 AbstractCegarLoop]: Abstraction has 1789 states and 2908 transitions. [2022-11-23 13:49:32,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1789 states and 2908 transitions. [2022-11-23 13:49:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 13:49:32,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:32,086 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 13:49:32,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:32,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash 655668797, now seen corresponding path program 1 times [2022-11-23 13:49:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:32,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15321728] [2022-11-23 13:49:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:32,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:32,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15321728] [2022-11-23 13:49:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15321728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:32,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:32,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:32,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888428180] [2022-11-23 13:49:32,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:32,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:32,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:32,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:32,176 INFO L87 Difference]: Start difference. First operand 1789 states and 2908 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:32,435 INFO L93 Difference]: Finished difference Result 4238 states and 6959 transitions. [2022-11-23 13:49:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:32,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 91 [2022-11-23 13:49:32,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:32,451 INFO L225 Difference]: With dead ends: 4238 [2022-11-23 13:49:32,451 INFO L226 Difference]: Without dead ends: 2728 [2022-11-23 13:49:32,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:32,458 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 51 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:32,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 549 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:32,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2022-11-23 13:49:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2723. [2022-11-23 13:49:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 1920 states have (on average 1.5098958333333334) internal successors, (2899), 1924 states have internal predecessors, (2899), 773 states have call successors, (773), 29 states have call predecessors, (773), 29 states have return successors, (772), 771 states have call predecessors, (772), 772 states have call successors, (772) [2022-11-23 13:49:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 4444 transitions. [2022-11-23 13:49:32,680 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 4444 transitions. Word has length 91 [2022-11-23 13:49:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:32,681 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 4444 transitions. [2022-11-23 13:49:32,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 4444 transitions. [2022-11-23 13:49:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 13:49:32,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:32,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:32,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 13:49:32,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1550761869, now seen corresponding path program 1 times [2022-11-23 13:49:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:32,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017708175] [2022-11-23 13:49:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:32,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017708175] [2022-11-23 13:49:32,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017708175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:32,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:32,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:32,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548222358] [2022-11-23 13:49:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:32,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:32,777 INFO L87 Difference]: Start difference. First operand 2723 states and 4444 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:33,121 INFO L93 Difference]: Finished difference Result 6754 states and 11119 transitions. [2022-11-23 13:49:33,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 92 [2022-11-23 13:49:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:33,146 INFO L225 Difference]: With dead ends: 6754 [2022-11-23 13:49:33,146 INFO L226 Difference]: Without dead ends: 4453 [2022-11-23 13:49:33,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:33,156 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 49 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:33,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 570 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4453 states. [2022-11-23 13:49:33,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4453 to 4448. [2022-11-23 13:49:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3152 states have (on average 1.501269035532995) internal successors, (4732), 3156 states have internal predecessors, (4732), 1266 states have call successors, (1266), 29 states have call predecessors, (1266), 29 states have return successors, (1265), 1264 states have call predecessors, (1265), 1265 states have call successors, (1265) [2022-11-23 13:49:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 7263 transitions. [2022-11-23 13:49:33,530 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 7263 transitions. Word has length 92 [2022-11-23 13:49:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:33,530 INFO L495 AbstractCegarLoop]: Abstraction has 4448 states and 7263 transitions. [2022-11-23 13:49:33,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 7263 transitions. [2022-11-23 13:49:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 13:49:33,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:33,546 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 13:49:33,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1701159399, now seen corresponding path program 1 times [2022-11-23 13:49:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:33,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781366894] [2022-11-23 13:49:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:33,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:33,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781366894] [2022-11-23 13:49:33,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781366894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:33,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:33,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072095370] [2022-11-23 13:49:33,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:33,643 INFO L87 Difference]: Start difference. First operand 4448 states and 7263 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:34,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:34,220 INFO L93 Difference]: Finished difference Result 11170 states and 18404 transitions. [2022-11-23 13:49:34,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:34,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-11-23 13:49:34,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:34,268 INFO L225 Difference]: With dead ends: 11170 [2022-11-23 13:49:34,268 INFO L226 Difference]: Without dead ends: 7410 [2022-11-23 13:49:34,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:34,282 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 47 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:34,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 554 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7410 states. [2022-11-23 13:49:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7410 to 7405. [2022-11-23 13:49:34,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7405 states, 5287 states have (on average 1.4974465670512578) internal successors, (7917), 5291 states have internal predecessors, (7917), 2088 states have call successors, (2088), 29 states have call predecessors, (2088), 29 states have return successors, (2087), 2086 states have call predecessors, (2087), 2087 states have call successors, (2087) [2022-11-23 13:49:34,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7405 states to 7405 states and 12092 transitions. [2022-11-23 13:49:34,939 INFO L78 Accepts]: Start accepts. Automaton has 7405 states and 12092 transitions. Word has length 93 [2022-11-23 13:49:34,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:34,940 INFO L495 AbstractCegarLoop]: Abstraction has 7405 states and 12092 transitions. [2022-11-23 13:49:34,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7405 states and 12092 transitions. [2022-11-23 13:49:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-23 13:49:34,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:34,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:34,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 13:49:34,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:34,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:34,964 INFO L85 PathProgramCache]: Analyzing trace with hash 419342885, now seen corresponding path program 1 times [2022-11-23 13:49:34,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:34,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512230762] [2022-11-23 13:49:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:35,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:35,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512230762] [2022-11-23 13:49:35,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512230762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:35,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:35,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012359339] [2022-11-23 13:49:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:35,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:35,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:35,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:35,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:35,053 INFO L87 Difference]: Start difference. First operand 7405 states and 12092 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:36,105 INFO L93 Difference]: Finished difference Result 18637 states and 30666 transitions. [2022-11-23 13:49:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:36,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2022-11-23 13:49:36,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:36,180 INFO L225 Difference]: With dead ends: 18637 [2022-11-23 13:49:36,180 INFO L226 Difference]: Without dead ends: 12354 [2022-11-23 13:49:36,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:36,201 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 45 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:36,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 553 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12354 states. [2022-11-23 13:49:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12354 to 12349. [2022-11-23 13:49:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12349 states, 9028 states have (on average 1.4995569339831636) internal successors, (13538), 9032 states have internal predecessors, (13538), 3291 states have call successors, (3291), 29 states have call predecessors, (3291), 29 states have return successors, (3290), 3289 states have call predecessors, (3290), 3290 states have call successors, (3290) [2022-11-23 13:49:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12349 states to 12349 states and 20119 transitions. [2022-11-23 13:49:37,249 INFO L78 Accepts]: Start accepts. Automaton has 12349 states and 20119 transitions. Word has length 94 [2022-11-23 13:49:37,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:37,250 INFO L495 AbstractCegarLoop]: Abstraction has 12349 states and 20119 transitions. [2022-11-23 13:49:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12349 states and 20119 transitions. [2022-11-23 13:49:37,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 13:49:37,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:37,272 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:37,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 13:49:37,273 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:37,273 INFO L85 PathProgramCache]: Analyzing trace with hash -647799848, now seen corresponding path program 1 times [2022-11-23 13:49:37,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:37,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153774462] [2022-11-23 13:49:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:37,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:37,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153774462] [2022-11-23 13:49:37,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153774462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:37,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:37,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876350997] [2022-11-23 13:49:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:37,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:37,506 INFO L87 Difference]: Start difference. First operand 12349 states and 20119 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:39,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:39,245 INFO L93 Difference]: Finished difference Result 32641 states and 53528 transitions. [2022-11-23 13:49:39,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:39,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2022-11-23 13:49:39,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:39,339 INFO L225 Difference]: With dead ends: 32641 [2022-11-23 13:49:39,340 INFO L226 Difference]: Without dead ends: 21866 [2022-11-23 13:49:39,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:39,371 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 43 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:39,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 554 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:39,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21866 states. [2022-11-23 13:49:41,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21866 to 21861. [2022-11-23 13:49:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21861 states, 16090 states have (on average 1.4922933499067743) internal successors, (24011), 16094 states have internal predecessors, (24011), 5741 states have call successors, (5741), 29 states have call predecessors, (5741), 29 states have return successors, (5740), 5739 states have call predecessors, (5740), 5740 states have call successors, (5740) [2022-11-23 13:49:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21861 states to 21861 states and 35492 transitions. [2022-11-23 13:49:41,263 INFO L78 Accepts]: Start accepts. Automaton has 21861 states and 35492 transitions. Word has length 95 [2022-11-23 13:49:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:41,264 INFO L495 AbstractCegarLoop]: Abstraction has 21861 states and 35492 transitions. [2022-11-23 13:49:41,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:41,264 INFO L276 IsEmpty]: Start isEmpty. Operand 21861 states and 35492 transitions. [2022-11-23 13:49:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 13:49:41,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:41,293 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:41,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 13:49:41,294 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1103677397, now seen corresponding path program 1 times [2022-11-23 13:49:41,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:41,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617566420] [2022-11-23 13:49:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:41,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:41,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617566420] [2022-11-23 13:49:41,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617566420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:41,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:41,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:41,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780519144] [2022-11-23 13:49:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:41,379 INFO L87 Difference]: Start difference. First operand 21861 states and 35492 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:44,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:44,811 INFO L93 Difference]: Finished difference Result 59328 states and 96780 transitions. [2022-11-23 13:49:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:44,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 96 [2022-11-23 13:49:44,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:44,971 INFO L225 Difference]: With dead ends: 59328 [2022-11-23 13:49:44,971 INFO L226 Difference]: Without dead ends: 39636 [2022-11-23 13:49:45,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:45,016 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 41 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:45,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 557 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:45,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39636 states. [2022-11-23 13:49:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39636 to 39631. [2022-11-23 13:49:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39631 states, 29347 states have (on average 1.4818209697754456) internal successors, (43487), 29351 states have internal predecessors, (43487), 10254 states have call successors, (10254), 29 states have call predecessors, (10254), 29 states have return successors, (10253), 10252 states have call predecessors, (10253), 10253 states have call successors, (10253) [2022-11-23 13:49:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39631 states to 39631 states and 63994 transitions. [2022-11-23 13:49:48,958 INFO L78 Accepts]: Start accepts. Automaton has 39631 states and 63994 transitions. Word has length 96 [2022-11-23 13:49:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:49:48,959 INFO L495 AbstractCegarLoop]: Abstraction has 39631 states and 63994 transitions. [2022-11-23 13:49:48,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 39631 states and 63994 transitions. [2022-11-23 13:49:48,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-23 13:49:48,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:49:48,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:49:48,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 13:49:48,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:49:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:49:48,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1109773272, now seen corresponding path program 1 times [2022-11-23 13:49:48,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:49:48,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498951689] [2022-11-23 13:49:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:49:48,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:49:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:49:49,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:49:49,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:49:49,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498951689] [2022-11-23 13:49:49,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498951689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:49:49,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:49:49,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:49:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094708485] [2022-11-23 13:49:49,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:49:49,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:49:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:49:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:49:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:49,077 INFO L87 Difference]: Start difference. First operand 39631 states and 63994 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:49:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:49:54,141 INFO L93 Difference]: Finished difference Result 73226 states and 118415 transitions. [2022-11-23 13:49:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:49:54,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 97 [2022-11-23 13:49:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:49:54,489 INFO L225 Difference]: With dead ends: 73226 [2022-11-23 13:49:54,490 INFO L226 Difference]: Without dead ends: 73079 [2022-11-23 13:49:54,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:49:54,522 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 39 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:49:54,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 554 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:49:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73079 states. [2022-11-23 13:50:00,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73079 to 73074. [2022-11-23 13:50:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73074 states, 54422 states have (on average 1.467954136194921) internal successors, (79889), 54426 states have internal predecessors, (79889), 18622 states have call successors, (18622), 29 states have call predecessors, (18622), 29 states have return successors, (18621), 18620 states have call predecessors, (18621), 18621 states have call successors, (18621) [2022-11-23 13:50:00,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73074 states to 73074 states and 117132 transitions. [2022-11-23 13:50:00,606 INFO L78 Accepts]: Start accepts. Automaton has 73074 states and 117132 transitions. Word has length 97 [2022-11-23 13:50:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:50:00,607 INFO L495 AbstractCegarLoop]: Abstraction has 73074 states and 117132 transitions. [2022-11-23 13:50:00,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-23 13:50:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 73074 states and 117132 transitions. [2022-11-23 13:50:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 13:50:00,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:50:00,636 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:50:00,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 13:50:00,637 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:50:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:50:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1073040916, now seen corresponding path program 1 times [2022-11-23 13:50:00,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:50:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257868123] [2022-11-23 13:50:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:50:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:50:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:50:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:50:02,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:50:02,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257868123] [2022-11-23 13:50:02,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257868123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:50:02,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:50:02,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-23 13:50:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561802309] [2022-11-23 13:50:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:50:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 13:50:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:50:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 13:50:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-11-23 13:50:02,957 INFO L87 Difference]: Start difference. First operand 73074 states and 117132 transitions. Second operand has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-23 13:50:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:50:10,915 INFO L93 Difference]: Finished difference Result 73301 states and 117477 transitions. [2022-11-23 13:50:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 13:50:10,915 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 98 [2022-11-23 13:50:10,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:50:11,208 INFO L225 Difference]: With dead ends: 73301 [2022-11-23 13:50:11,208 INFO L226 Difference]: Without dead ends: 73297 [2022-11-23 13:50:11,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 13:50:11,232 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 642 mSDsluCounter, 4582 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 13:50:11,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [675 Valid, 4956 Invalid, 4020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [363 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 13:50:11,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73297 states.