./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:14:22,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:14:22,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:14:22,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:14:22,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:14:22,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:14:22,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:14:22,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:14:22,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:14:22,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:14:22,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:14:22,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:14:22,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:14:22,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:14:22,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:14:22,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:14:22,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:14:22,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:14:22,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:14:22,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:14:22,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:14:22,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:14:22,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:14:22,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:14:22,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:14:22,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:14:22,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:14:22,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:14:22,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:14:22,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:14:22,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:14:22,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:14:22,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:14:22,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:14:22,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:14:22,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:14:22,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:14:22,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:14:22,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:14:22,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:14:22,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:14:22,105 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:14:22,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:14:22,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:14:22,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:14:22,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:14:22,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:14:22,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:14:22,150 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:14:22,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:14:22,150 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:14:22,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:14:22,152 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:14:22,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:14:22,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:14:22,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:14:22,153 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:14:22,153 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:14:22,153 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:14:22,154 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:14:22,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:14:22,154 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:14:22,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:14:22,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:14:22,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:14:22,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:14:22,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:14:22,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:14:22,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:14:22,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:14:22,158 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:14:22,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:14:22,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:14:22,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:14:22,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:22,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:14:22,159 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:14:22,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:14:22,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:14:22,160 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:14:22,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:14:22,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:14:22,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:14:22,161 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_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d5581bc5c458c0b8250652569dd3286beeda44b685a7a0cdda121612582c0c [2022-11-03 02:14:22,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:14:22,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:14:22,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:14:22,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:14:22,491 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:14:22,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2022-11-03 02:14:22,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/data/6966f4447/ee17baebbe1e4fe28c4651103cab3a74/FLAG1e8ee95ab [2022-11-03 02:14:23,258 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:14:23,263 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c [2022-11-03 02:14:23,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/data/6966f4447/ee17baebbe1e4fe28c4651103cab3a74/FLAG1e8ee95ab [2022-11-03 02:14:23,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/data/6966f4447/ee17baebbe1e4fe28c4651103cab3a74 [2022-11-03 02:14:23,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:14:23,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:14:23,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:23,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:14:23,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:14:23,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:23" (1/1) ... [2022-11-03 02:14:23,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@759ac527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:23, skipping insertion in model container [2022-11-03 02:14:23,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:14:23" (1/1) ... [2022-11-03 02:14:23,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:14:23,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:14:23,808 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2022-11-03 02:14:24,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:24,297 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:14:24,314 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/sv-benchmarks/c/product-lines/email_spec11_product20.cil.c[1543,1556] [2022-11-03 02:14:24,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:14:24,516 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:14:24,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24 WrapperNode [2022-11-03 02:14:24,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:14:24,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:24,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:14:24,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:14:24,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,648 INFO L138 Inliner]: procedures = 128, calls = 214, calls flagged for inlining = 54, calls inlined = 49, statements flattened = 973 [2022-11-03 02:14:24,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:14:24,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:14:24,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:14:24,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:14:24,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:14:24,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:14:24,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:14:24,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:14:24,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (1/1) ... [2022-11-03 02:14:24,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:14:24,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:24,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:14:24,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:14:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 02:14:24,842 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 02:14:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 02:14:24,842 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 02:14:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 02:14:24,843 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 02:14:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 02:14:24,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 02:14:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 02:14:24,844 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 02:14:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:14:24,844 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 02:14:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 02:14:24,844 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 02:14:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 02:14:24,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 02:14:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 02:14:24,845 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 02:14:24,845 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 02:14:24,845 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 02:14:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 02:14:24,846 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 02:14:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 02:14:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 02:14:24,846 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 02:14:24,846 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 02:14:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 02:14:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:14:24,847 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 02:14:24,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 02:14:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 02:14:24,849 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 02:14:24,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 02:14:24,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 02:14:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 02:14:24,850 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 02:14:24,850 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 02:14:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 02:14:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 02:14:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 02:14:24,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 02:14:24,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 02:14:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 02:14:24,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 02:14:24,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:14:24,853 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 02:14:24,853 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 02:14:24,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 02:14:24,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 02:14:24,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:14:24,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:14:25,086 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:14:25,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:14:26,165 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:14:26,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:14:26,724 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:14:26,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:26 BoogieIcfgContainer [2022-11-03 02:14:26,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:14:26,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:14:26,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:14:26,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:14:26,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:14:23" (1/3) ... [2022-11-03 02:14:26,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709e03e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:26, skipping insertion in model container [2022-11-03 02:14:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:14:24" (2/3) ... [2022-11-03 02:14:26,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709e03e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:14:26, skipping insertion in model container [2022-11-03 02:14:26,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:14:26" (3/3) ... [2022-11-03 02:14:26,740 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product20.cil.c [2022-11-03 02:14:26,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:14:26,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:14:26,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:14:26,835 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;@1346307d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:14:26,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:14:26,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-03 02:14:26,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:14:26,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:26,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:26,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -907500454, now seen corresponding path program 1 times [2022-11-03 02:14:26,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:26,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654294537] [2022-11-03 02:14:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:14:27,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:27,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654294537] [2022-11-03 02:14:27,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654294537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:27,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:27,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:14:27,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103874205] [2022-11-03 02:14:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:27,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:14:27,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:27,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:14:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:14:27,410 INFO L87 Difference]: Start difference. First operand has 182 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 108 states have internal predecessors, (137), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:14:27,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:27,611 INFO L93 Difference]: Finished difference Result 272 states and 361 transitions. [2022-11-03 02:14:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:14:27,616 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 73 [2022-11-03 02:14:27,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:27,635 INFO L225 Difference]: With dead ends: 272 [2022-11-03 02:14:27,636 INFO L226 Difference]: Without dead ends: 179 [2022-11-03 02:14:27,640 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 [2022-11-03 02:14:27,643 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:27,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:27,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-03 02:14:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-03 02:14:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 101 states have (on average 1.297029702970297) internal successors, (131), 105 states have internal predecessors, (131), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 02:14:27,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 238 transitions. [2022-11-03 02:14:27,709 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 238 transitions. Word has length 73 [2022-11-03 02:14:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 238 transitions. [2022-11-03 02:14:27,711 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:14:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 238 transitions. [2022-11-03 02:14:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:14:27,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:27,716 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:14:27,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:14:27,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:27,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:27,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1076798138, now seen corresponding path program 1 times [2022-11-03 02:14:27,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:27,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877383843] [2022-11-03 02:14:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:14:27,986 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:27,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877383843] [2022-11-03 02:14:27,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877383843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:27,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:27,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:27,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991039717] [2022-11-03 02:14:27,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:27,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:27,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:27,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:27,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:27,991 INFO L87 Difference]: Start difference. First operand 179 states and 238 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:14:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:28,180 INFO L93 Difference]: Finished difference Result 268 states and 346 transitions. [2022-11-03 02:14:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:28,181 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 74 [2022-11-03 02:14:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:28,183 INFO L225 Difference]: With dead ends: 268 [2022-11-03 02:14:28,184 INFO L226 Difference]: Without dead ends: 181 [2022-11-03 02:14:28,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:28,186 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:28,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 405 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-03 02:14:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-11-03 02:14:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 107 states have internal predecessors, (133), 54 states have call successors, (54), 23 states have call predecessors, (54), 23 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 02:14:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 240 transitions. [2022-11-03 02:14:28,206 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 240 transitions. Word has length 74 [2022-11-03 02:14:28,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:28,207 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 240 transitions. [2022-11-03 02:14:28,207 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:14:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 240 transitions. [2022-11-03 02:14:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-03 02:14:28,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:28,211 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] [2022-11-03 02:14:28,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:14:28,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:28,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:28,212 INFO L85 PathProgramCache]: Analyzing trace with hash 908099707, now seen corresponding path program 1 times [2022-11-03 02:14:28,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:28,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138642995] [2022-11-03 02:14:28,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:28,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:14:28,331 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:28,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138642995] [2022-11-03 02:14:28,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138642995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:14:28,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:14:28,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:14:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890463684] [2022-11-03 02:14:28,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:14:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:14:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:14:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:14:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:28,334 INFO L87 Difference]: Start difference. First operand 181 states and 240 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:14:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:14:28,451 INFO L93 Difference]: Finished difference Result 397 states and 547 transitions. [2022-11-03 02:14:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:14:28,452 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 79 [2022-11-03 02:14:28,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:14:28,454 INFO L225 Difference]: With dead ends: 397 [2022-11-03 02:14:28,454 INFO L226 Difference]: Without dead ends: 234 [2022-11-03 02:14:28,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:14:28,457 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 59 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:14:28,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 418 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:14:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-03 02:14:28,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2022-11-03 02:14:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 141 states have internal predecessors, (188), 68 states have call successors, (68), 23 states have call predecessors, (68), 23 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-03 02:14:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2022-11-03 02:14:28,480 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 79 [2022-11-03 02:14:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:14:28,481 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2022-11-03 02:14:28,481 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:14:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2022-11-03 02:14:28,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:14:28,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:14:28,486 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] [2022-11-03 02:14:28,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:14:28,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:14:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:14:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash 889440703, now seen corresponding path program 1 times [2022-11-03 02:14:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:14:28,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542033531] [2022-11-03 02:14:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:14:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:14:28,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:14:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542033531] [2022-11-03 02:14:28,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542033531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:14:28,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080772088] [2022-11-03 02:14:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:14:28,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:14:28,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:14:28,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:14:28,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:14:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:14:29,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:14:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:14:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:14:29,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:14:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:14:29,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080772088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:14:29,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1950994888] [2022-11-03 02:14:29,329 INFO L159 IcfgInterpreter]: Started Sifa with 67 locations of interest [2022-11-03 02:14:29,329 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:14:29,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:14:29,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:14:29,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:15:06,574 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 02:15:07,053 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 02:15:07,479 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-03 02:15:09,380 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-03 02:15:09,432 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 257 for LOIs [2022-11-03 02:15:10,236 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 264 for LOIs [2022-11-03 02:15:20,085 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 248 for LOIs [2022-11-03 02:15:20,909 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-11-03 02:15:20,954 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 436 for LOIs [2022-11-03 02:15:21,663 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 469 for LOIs [2022-11-03 02:15:27,095 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 229 for LOIs [2022-11-03 02:15:27,140 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:16:02,447 WARN L234 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 476 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:09,768 WARN L234 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 486 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:22,348 WARN L234 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 508 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:16:40,419 WARN L234 SmtUtils]: Spent 17.72s on a formula simplification. DAG size of input: 583 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:04,898 WARN L234 SmtUtils]: Spent 14.35s on a formula simplification. DAG size of input: 469 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:11,712 WARN L234 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 491 DAG size of output: 272 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:47,445 WARN L234 SmtUtils]: Spent 12.49s on a formula simplification. DAG size of input: 436 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:02,945 WARN L234 SmtUtils]: Spent 13.08s on a formula simplification. DAG size of input: 455 DAG size of output: 348 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:25,696 WARN L234 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 544 DAG size of output: 374 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:04,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3203#(and (= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~msg#1|) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~17#1| 2147483648)) (<= 0 |outgoing__wrappee__AutoResponder_~tmp___0~2#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1|) (<= |old(~__ste_email_isEncrypted1~0)| 0) (= ~__ste_email_subject0~0.offset 0) (<= 0 ~__ste_email_encryptionKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1|) (= ~__SELECTED_FEATURE_Sign~0 0) (= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~userid#1| 2) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1| 1) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1| 2) (= |outgoing__wrappee__AutoResponder_~pubkey~0#1| 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~17#1| 2147483647) (= ~__ste_Client_counter~0 0) (= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1| 1) (<= |outgoing__wrappee__AutoResponder_autoRespond_~client#1| 2) (<= |old(~__ste_email_encryptionKey0~0)| 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_deliver_~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_encryptionKey1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= |outgoing__wrappee__AutoResponder_incoming_~privkey~0#1| 0) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~tmp~8#1| 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~handle#1| 1) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias1~0 0) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (= ~__ste_client_forwardReceiver3~0 0) (<= 2 |outgoing__wrappee__AutoResponder_findPublicKey_#in~userid#1|) (= ~__ste_client_name2~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1|) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_#res#1| 0) (= ~__ste_client_name1~0.base 0) (<= 0 ~__ste_client_autoResponse1~0) (<= |old(~queued_client~0)| 0) (= ~__SELECTED_FEATURE_Verify~0 0) (= ~__ste_Client_Keyring1_User0~0 0) (<= 0 |old(~__ste_email_encryptionKey1~0)|) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1| 1) (= ~__ste_email_body1~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_findPublicKey_~userid#1|) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#res#1| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~client#1| 2) (= ~__SELECTED_FEATURE_Encrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_#in~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~handle#1| 2) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (<= |outgoing__wrappee__AutoResponder_deliver_#in~client#1| 2) (= ~__ste_ClientAddressBook_size1~0 0) (= ~__ste_Client_Keyring0_PublicKey0~0 0) (= ~__ste_Email_counter~0 0) (<= 2 |outgoing__wrappee__AutoResponder_mail_~tmp~9#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~client#1|) (= ~__ste_ClientKeyring_size1~0 0) (= ~__ste_email_body0~0.offset 0) (= ~__ste_email_isSignatureVerified0~0 0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (<= |old(~__ste_email_isEncrypted0~0)| 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (= ~head~0.offset 0) (= ~__ste_client_name0~0.offset 0) (<= 2 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1|) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= |outgoing__wrappee__AutoResponder_incoming_~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_findPublicKey_#in~handle#1|) (<= ~__ste_client_privateKey2~0 789) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= 0 |old(~__ste_email_encryptionKey0~0)|) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (= ~__ste_email_signKey0~0 0) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 |old(~__ste_email_isEncrypted0~0)|) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~client#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~client#1| 1) (<= 0 ~__ste_email_isEncrypted1~0) (<= |outgoing__wrappee__AutoResponder_~tmp~11#1| 2) (= ~__SELECTED_FEATURE_Keys~0 0) (<= 0 |old(~__ste_email_from0~0)|) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1| 1) (= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_client_forwardReceiver2~0 0) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= |outgoing__wrappee__AutoResponder_incoming_~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~tmp~13#1| 1) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (= ~__ste_email_isSigned0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_deliver_~msg#1|) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#in~userid#1| 2) (= ~__ste_email_isSigned1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~msg#1|) (= ~__ste_email_id0~0 0) (<= ~__ste_client_autoResponse0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_~msg#1|) (= ~__ste_Client_Keyring2_User1~0 0) (<= |outgoing__wrappee__AutoResponder_~receiver~0#1| 2) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1| 2) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~msg#1|) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_#in~handle#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_incoming_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~tmp~9#1| 2) (= 3 ~chuck~0) (<= 0 |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~9#1|) (= ~__ste_Client_AddressBook2_Address1~0 0) (<= 1 ~queue_empty~0) (<= 2 |outgoing__wrappee__AutoResponder_getClientPrivateKey_~handle#1|) (<= |outgoing__wrappee__AutoResponder_incoming_~tmp~14#1| 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (= ~bob~0 1) (= ~__ste_client_forwardReceiver1~0 0) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~queued_message~0) (= ~__ste_Client_AddressBook1_Alias2~0 0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_#in~handle#1| 2) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_~client#1|) (<= 2 |outgoing__wrappee__AutoResponder_deliver_~client#1|) (<= 1 |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1|) (<= 2 |outgoing__wrappee__AutoResponder_~receiver~0#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 |old(~__ste_email_isEncrypted1~0)|) (<= 1 |outgoing__wrappee__AutoResponder_incoming_~msg#1|) (= ~__SELECTED_FEATURE_Base~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1|) (= ~__ste_client_forwardReceiver0~0 0) (<= |outgoing__wrappee__AutoResponder_deliver_~client#1| 2) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1| 2) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1|) (<= |outgoing__wrappee__AutoResponder_findPublicKey_~retValue_acc~15#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (= ~rjh~0 2) (= 0 ~__ste_Client_AddressBook0_Address1~0) (= ~__ste_Client_AddressBook2_Address0~0 0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_email_isSignatureVerified1~0 0) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~msg#1| 1) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 2 |outgoing__wrappee__AutoResponder_deliver_#in~client#1|) (= ~__ste_client_name2~0.base 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~10#1| 2147483648)) (<= 2 |outgoing__wrappee__AutoResponder_getClientPrivateKey_#in~handle#1|) (<= 2 |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_~client#1|) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__DecryptAutoResponder_spec__1_#in~client#1| 2) (<= |old(~__ste_email_encryptionKey1~0)| 0) (= ~__ste_email_subject1~0.base 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~msg#1| 1) (<= |old(~queue_empty~0)| 1) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (= ~__ste_Client_AddressBook1_Alias0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~msg#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg2~0#1| 1) (= ~__ste_Client_Keyring2_User2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientAutoResponse_~retValue_acc~9#1| 1) (= ~head~0.base 0) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_~retValue_acc~10#1| 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= |#NULL.offset| 0) (<= 0 |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_~tmp~13#1|) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= |outgoing__wrappee__AutoResponder_findPublicKey_#in~handle#1| 1) (<= 0 |outgoing__wrappee__AutoResponder_getClientPrivateKey_~retValue_acc~10#1|) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (= ~__ste_email_subject1~0.offset 0) (<= 0 |outgoing__wrappee__AutoResponder_findPublicKey_~retValue_acc~15#1|) (= ~__ste_Client_AddressBook0_Alias2~0 0) (= ~__ste_ClientKeyring_size0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (= ~__ste_Client_AddressBook1_Address1~0 0) (= 0 ~__ste_Client_AddressBook0_Address0~0) (= ~__ste_client_outbuffer1~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~client#1| 2) (<= |outgoing__wrappee__AutoResponder_getClientPrivateKey_~handle#1| 2) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= ~__ste_email_isEncrypted1~0 0) (<= ~__ste_client_privateKey1~0 0) (= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= 2 |outgoing__wrappee__AutoResponder_~tmp~11#1|) (<= |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_~tmp~10#1| 2147483647) (<= 0 |outgoing__wrappee__AutoResponder_findPublicKey_#res#1|) (<= 1 |outgoing__wrappee__AutoResponder_outgoing__wrappee__Keys_#in~msg#1|) (<= 0 |outgoing__wrappee__AutoResponder_getClientPrivateKey_#res#1|) (<= |outgoing__wrappee__AutoResponder_incoming_#in~client#1| 2) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (= ~__ste_email_id1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= |outgoing__wrappee__AutoResponder_deliver_#in~msg#1| 1) (<= 2 ~__ste_email_to0~0) (<= 0 |outgoing__wrappee__AutoResponder_getClientAutoResponse_#res#1|) (<= |outgoing__wrappee__AutoResponder_autoRespond_#in~msg#1| 1) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 0 |outgoing__wrappee__AutoResponder_incoming_~tmp~14#1|) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (<= 2 |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_~client#1|) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (<= |outgoing__wrappee__AutoResponder_autoRespond_~__utac__ad__arg1~0#1| 2) (= ~__ste_email_body1~0.base 0) (<= 2 |outgoing__wrappee__AutoResponder_autoRespond_#in~client#1|) (= ~__ste_ClientKeyring_size2~0 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__Encrypt_#in~client#1| 2) (<= 0 ~__ste_email_encryptionKey0~0) (<= |outgoing__wrappee__AutoResponder_~tmp___0~2#1| 0) (= |#NULL.base| 0) (<= |outgoing__wrappee__AutoResponder_incoming__wrappee__AddressBook_#in~msg#1| 1) (<= 0 ~__ste_client_privateKey1~0) (<= 1 |outgoing__wrappee__AutoResponder_findPublicKey_~handle#1|) (= ~__ste_email_signKey1~0 0) (<= ~queued_client~0 0))' at error location [2022-11-03 02:19:04,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:19:04,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:19:04,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 02:19:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819505873] [2022-11-03 02:19:04,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:19:04,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:19:04,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:04,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:19:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 02:19:04,018 INFO L87 Difference]: Start difference. First operand 229 states and 323 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:19:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:04,351 INFO L93 Difference]: Finished difference Result 591 states and 896 transitions. [2022-11-03 02:19:04,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:19:04,352 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 80 [2022-11-03 02:19:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:04,355 INFO L225 Difference]: With dead ends: 591 [2022-11-03 02:19:04,355 INFO L226 Difference]: Without dead ends: 504 [2022-11-03 02:19:04,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 945 ImplicationChecksByTransitivity, 216.8s TimeCoverageRelationStatistics Valid=187, Invalid=3973, Unknown=0, NotChecked=0, Total=4160 [2022-11-03 02:19:04,358 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 221 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:04,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 885 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:19:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-03 02:19:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 489. [2022-11-03 02:19:04,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 318 states have (on average 1.490566037735849) internal successors, (474), 322 states have internal predecessors, (474), 147 states have call successors, (147), 23 states have call predecessors, (147), 23 states have return successors, (146), 145 states have call predecessors, (146), 146 states have call successors, (146) [2022-11-03 02:19:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 767 transitions. [2022-11-03 02:19:04,396 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 767 transitions. Word has length 80 [2022-11-03 02:19:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:04,397 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 767 transitions. [2022-11-03 02:19:04,397 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, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:19:04,397 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 767 transitions. [2022-11-03 02:19:04,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 02:19:04,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:04,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:04,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:19:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4ba4ceb-d79c-4ee5-be56-c559ba7d9867/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:19:04,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:04,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1628636535, now seen corresponding path program 1 times [2022-11-03 02:19:04,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:04,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619233621] [2022-11-03 02:19:04,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:04,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:04,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619233621] [2022-11-03 02:19:04,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619233621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:04,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:04,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:04,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793534697] [2022-11-03 02:19:04,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:04,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:04,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:04,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:04,767 INFO L87 Difference]: Start difference. First operand 489 states and 767 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:04,885 INFO L93 Difference]: Finished difference Result 1208 states and 1932 transitions. [2022-11-03 02:19:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:04,886 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-11-03 02:19:04,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:04,890 INFO L225 Difference]: With dead ends: 1208 [2022-11-03 02:19:04,891 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 02:19:04,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:04,893 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 57 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:04,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 431 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 02:19:04,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 746. [2022-11-03 02:19:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 500 states have internal predecessors, (747), 226 states have call successors, (226), 23 states have call predecessors, (226), 23 states have return successors, (225), 224 states have call predecessors, (225), 225 states have call successors, (225) [2022-11-03 02:19:04,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1198 transitions. [2022-11-03 02:19:04,941 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1198 transitions. Word has length 86 [2022-11-03 02:19:04,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:04,941 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1198 transitions. [2022-11-03 02:19:04,942 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:04,942 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1198 transitions. [2022-11-03 02:19:04,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:19:04,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:04,947 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:19:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:19:04,948 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:04,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2090965858, now seen corresponding path program 1 times [2022-11-03 02:19:04,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:04,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172135852] [2022-11-03 02:19:04,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:04,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:05,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:05,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172135852] [2022-11-03 02:19:05,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172135852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:05,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:05,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822622646] [2022-11-03 02:19:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:05,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,034 INFO L87 Difference]: Start difference. First operand 746 states and 1198 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:05,170 INFO L93 Difference]: Finished difference Result 1830 states and 2979 transitions. [2022-11-03 02:19:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:05,171 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2022-11-03 02:19:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:05,177 INFO L225 Difference]: With dead ends: 1830 [2022-11-03 02:19:05,177 INFO L226 Difference]: Without dead ends: 1146 [2022-11-03 02:19:05,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,180 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 55 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:05,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 417 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-11-03 02:19:05,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1141. [2022-11-03 02:19:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 772 states have (on average 1.511658031088083) internal successors, (1167), 776 states have internal predecessors, (1167), 345 states have call successors, (345), 23 states have call predecessors, (345), 23 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-03 02:19:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1856 transitions. [2022-11-03 02:19:05,248 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1856 transitions. Word has length 87 [2022-11-03 02:19:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:05,248 INFO L495 AbstractCegarLoop]: Abstraction has 1141 states and 1856 transitions. [2022-11-03 02:19:05,248 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1856 transitions. [2022-11-03 02:19:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-03 02:19:05,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:05,254 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] [2022-11-03 02:19:05,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:19:05,255 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:05,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:05,255 INFO L85 PathProgramCache]: Analyzing trace with hash -30321125, now seen corresponding path program 1 times [2022-11-03 02:19:05,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:05,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98343856] [2022-11-03 02:19:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:05,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98343856] [2022-11-03 02:19:05,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98343856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:05,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:05,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904668270] [2022-11-03 02:19:05,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:05,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:05,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:05,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,335 INFO L87 Difference]: Start difference. First operand 1141 states and 1856 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:05,509 INFO L93 Difference]: Finished difference Result 2733 states and 4491 transitions. [2022-11-03 02:19:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:05,510 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2022-11-03 02:19:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:05,519 INFO L225 Difference]: With dead ends: 2733 [2022-11-03 02:19:05,519 INFO L226 Difference]: Without dead ends: 1734 [2022-11-03 02:19:05,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,523 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 53 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:05,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 411 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:05,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-11-03 02:19:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1729. [2022-11-03 02:19:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1198 states have (on average 1.515025041736227) internal successors, (1815), 1202 states have internal predecessors, (1815), 507 states have call successors, (507), 23 states have call predecessors, (507), 23 states have return successors, (506), 505 states have call predecessors, (506), 506 states have call successors, (506) [2022-11-03 02:19:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2828 transitions. [2022-11-03 02:19:05,629 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2828 transitions. Word has length 88 [2022-11-03 02:19:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:05,629 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2828 transitions. [2022-11-03 02:19:05,629 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2828 transitions. [2022-11-03 02:19:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:19:05,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:05,638 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] [2022-11-03 02:19:05,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:19:05,638 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:05,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:05,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1897243903, now seen corresponding path program 1 times [2022-11-03 02:19:05,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:05,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277464472] [2022-11-03 02:19:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:05,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277464472] [2022-11-03 02:19:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277464472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:05,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:05,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:05,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542993850] [2022-11-03 02:19:05,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:05,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:05,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,717 INFO L87 Difference]: Start difference. First operand 1729 states and 2828 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:05,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:05,939 INFO L93 Difference]: Finished difference Result 4118 states and 6799 transitions. [2022-11-03 02:19:05,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:05,940 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2022-11-03 02:19:05,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:05,954 INFO L225 Difference]: With dead ends: 4118 [2022-11-03 02:19:05,954 INFO L226 Difference]: Without dead ends: 2668 [2022-11-03 02:19:05,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:05,960 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 51 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:05,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 411 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:05,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2022-11-03 02:19:06,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 2663. [2022-11-03 02:19:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 1887 states have (on average 1.516163222045575) internal successors, (2861), 1891 states have internal predecessors, (2861), 752 states have call successors, (752), 23 states have call predecessors, (752), 23 states have return successors, (751), 750 states have call predecessors, (751), 751 states have call successors, (751) [2022-11-03 02:19:06,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 4364 transitions. [2022-11-03 02:19:06,170 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 4364 transitions. Word has length 89 [2022-11-03 02:19:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:06,171 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 4364 transitions. [2022-11-03 02:19:06,171 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 4364 transitions. [2022-11-03 02:19:06,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 02:19:06,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:06,182 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] [2022-11-03 02:19:06,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:19:06,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1727987263, now seen corresponding path program 1 times [2022-11-03 02:19:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:06,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727906399] [2022-11-03 02:19:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:06,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:06,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:06,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:06,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727906399] [2022-11-03 02:19:06,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727906399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:06,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:06,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:06,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820743852] [2022-11-03 02:19:06,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:06,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:06,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:06,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:06,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:06,274 INFO L87 Difference]: Start difference. First operand 2663 states and 4364 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:06,632 INFO L93 Difference]: Finished difference Result 6634 states and 10959 transitions. [2022-11-03 02:19:06,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:06,633 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2022-11-03 02:19:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:06,653 INFO L225 Difference]: With dead ends: 6634 [2022-11-03 02:19:06,653 INFO L226 Difference]: Without dead ends: 4393 [2022-11-03 02:19:06,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:06,660 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 49 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:06,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 429 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:06,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2022-11-03 02:19:06,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 4388. [2022-11-03 02:19:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3119 states have (on average 1.504969541519718) internal successors, (4694), 3123 states have internal predecessors, (4694), 1245 states have call successors, (1245), 23 states have call predecessors, (1245), 23 states have return successors, (1244), 1243 states have call predecessors, (1244), 1244 states have call successors, (1244) [2022-11-03 02:19:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7183 transitions. [2022-11-03 02:19:06,967 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7183 transitions. Word has length 90 [2022-11-03 02:19:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:06,968 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7183 transitions. [2022-11-03 02:19:06,968 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7183 transitions. [2022-11-03 02:19:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:19:06,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:06,989 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] [2022-11-03 02:19:06,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:19:06,989 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1376828125, now seen corresponding path program 1 times [2022-11-03 02:19:06,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:06,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999097446] [2022-11-03 02:19:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:06,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:07,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:07,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999097446] [2022-11-03 02:19:07,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999097446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:07,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:07,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:07,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389464642] [2022-11-03 02:19:07,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:07,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:07,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:07,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:07,073 INFO L87 Difference]: Start difference. First operand 4388 states and 7183 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:07,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:07,608 INFO L93 Difference]: Finished difference Result 11050 states and 18244 transitions. [2022-11-03 02:19:07,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:07,609 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 91 [2022-11-03 02:19:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:07,644 INFO L225 Difference]: With dead ends: 11050 [2022-11-03 02:19:07,644 INFO L226 Difference]: Without dead ends: 7350 [2022-11-03 02:19:07,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:07,655 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 47 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:07,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 417 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:07,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2022-11-03 02:19:08,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7345. [2022-11-03 02:19:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7345 states, 5254 states have (on average 1.4996193376475067) internal successors, (7879), 5258 states have internal predecessors, (7879), 2067 states have call successors, (2067), 23 states have call predecessors, (2067), 23 states have return successors, (2066), 2065 states have call predecessors, (2066), 2066 states have call successors, (2066) [2022-11-03 02:19:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7345 states to 7345 states and 12012 transitions. [2022-11-03 02:19:08,241 INFO L78 Accepts]: Start accepts. Automaton has 7345 states and 12012 transitions. Word has length 91 [2022-11-03 02:19:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:08,242 INFO L495 AbstractCegarLoop]: Abstraction has 7345 states and 12012 transitions. [2022-11-03 02:19:08,242 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7345 states and 12012 transitions. [2022-11-03 02:19:08,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 02:19:08,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:08,261 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] [2022-11-03 02:19:08,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:19:08,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:08,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1453916835, now seen corresponding path program 1 times [2022-11-03 02:19:08,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:08,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807381723] [2022-11-03 02:19:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:08,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:08,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807381723] [2022-11-03 02:19:08,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807381723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:08,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:08,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:08,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053480638] [2022-11-03 02:19:08,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:08,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:08,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:08,346 INFO L87 Difference]: Start difference. First operand 7345 states and 12012 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:09,254 INFO L93 Difference]: Finished difference Result 18517 states and 30506 transitions. [2022-11-03 02:19:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:09,254 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 92 [2022-11-03 02:19:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:09,311 INFO L225 Difference]: With dead ends: 18517 [2022-11-03 02:19:09,311 INFO L226 Difference]: Without dead ends: 12294 [2022-11-03 02:19:09,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:09,334 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 45 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:09,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 414 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12294 states. [2022-11-03 02:19:10,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12294 to 12289. [2022-11-03 02:19:10,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12289 states, 8995 states have (on average 1.500833796553641) internal successors, (13500), 8999 states have internal predecessors, (13500), 3270 states have call successors, (3270), 23 states have call predecessors, (3270), 23 states have return successors, (3269), 3268 states have call predecessors, (3269), 3269 states have call successors, (3269) [2022-11-03 02:19:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12289 states to 12289 states and 20039 transitions. [2022-11-03 02:19:10,365 INFO L78 Accepts]: Start accepts. Automaton has 12289 states and 20039 transitions. Word has length 92 [2022-11-03 02:19:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:10,365 INFO L495 AbstractCegarLoop]: Abstraction has 12289 states and 20039 transitions. [2022-11-03 02:19:10,366 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12289 states and 20039 transitions. [2022-11-03 02:19:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:19:10,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:10,388 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] [2022-11-03 02:19:10,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:19:10,389 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:10,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:10,389 INFO L85 PathProgramCache]: Analyzing trace with hash 922258140, now seen corresponding path program 1 times [2022-11-03 02:19:10,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:10,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812239168] [2022-11-03 02:19:10,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:10,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:10,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:10,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812239168] [2022-11-03 02:19:10,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812239168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:10,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:10,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849828547] [2022-11-03 02:19:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:10,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:10,487 INFO L87 Difference]: Start difference. First operand 12289 states and 20039 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:12,107 INFO L93 Difference]: Finished difference Result 32521 states and 53368 transitions. [2022-11-03 02:19:12,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:12,108 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 93 [2022-11-03 02:19:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:12,193 INFO L225 Difference]: With dead ends: 32521 [2022-11-03 02:19:12,193 INFO L226 Difference]: Without dead ends: 21806 [2022-11-03 02:19:12,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:12,223 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 43 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:12,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:19:12,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21806 states. [2022-11-03 02:19:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21806 to 21801. [2022-11-03 02:19:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21801 states, 16057 states have (on average 1.4929937099084511) internal successors, (23973), 16061 states have internal predecessors, (23973), 5720 states have call successors, (5720), 23 states have call predecessors, (5720), 23 states have return successors, (5719), 5718 states have call predecessors, (5719), 5719 states have call successors, (5719) [2022-11-03 02:19:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21801 states to 21801 states and 35412 transitions. [2022-11-03 02:19:13,856 INFO L78 Accepts]: Start accepts. Automaton has 21801 states and 35412 transitions. Word has length 93 [2022-11-03 02:19:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:13,856 INFO L495 AbstractCegarLoop]: Abstraction has 21801 states and 35412 transitions. [2022-11-03 02:19:13,857 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21801 states and 35412 transitions. [2022-11-03 02:19:13,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 02:19:13,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:13,900 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] [2022-11-03 02:19:13,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:19:13,901 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:13,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash 369669731, now seen corresponding path program 1 times [2022-11-03 02:19:13,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:13,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302992974] [2022-11-03 02:19:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:13,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:14,015 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:14,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:14,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302992974] [2022-11-03 02:19:14,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302992974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:14,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:14,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:14,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882682551] [2022-11-03 02:19:14,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:14,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:14,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:14,019 INFO L87 Difference]: Start difference. First operand 21801 states and 35412 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:16,191 INFO L93 Difference]: Finished difference Result 59208 states and 96620 transitions. [2022-11-03 02:19:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:16,191 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-11-03 02:19:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:16,368 INFO L225 Difference]: With dead ends: 59208 [2022-11-03 02:19:16,369 INFO L226 Difference]: Without dead ends: 39576 [2022-11-03 02:19:16,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:16,426 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 41 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:16,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39576 states. [2022-11-03 02:19:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39576 to 39571. [2022-11-03 02:19:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39571 states, 29314 states have (on average 1.4821928088967729) internal successors, (43449), 29318 states have internal predecessors, (43449), 10233 states have call successors, (10233), 23 states have call predecessors, (10233), 23 states have return successors, (10232), 10231 states have call predecessors, (10232), 10232 states have call successors, (10232) [2022-11-03 02:19:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39571 states to 39571 states and 63914 transitions. [2022-11-03 02:19:19,622 INFO L78 Accepts]: Start accepts. Automaton has 39571 states and 63914 transitions. Word has length 94 [2022-11-03 02:19:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:19,623 INFO L495 AbstractCegarLoop]: Abstraction has 39571 states and 63914 transitions. [2022-11-03 02:19:19,623 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 39571 states and 63914 transitions. [2022-11-03 02:19:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-03 02:19:19,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:19,652 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] [2022-11-03 02:19:19,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:19:19,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -654194340, now seen corresponding path program 1 times [2022-11-03 02:19:19,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:19,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146004607] [2022-11-03 02:19:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:19,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:19,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:19,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146004607] [2022-11-03 02:19:19,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146004607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:19,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:19,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:19:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429615122] [2022-11-03 02:19:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:19,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:19:19,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:19:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:19,735 INFO L87 Difference]: Start difference. First operand 39571 states and 63914 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:24,036 INFO L93 Difference]: Finished difference Result 73106 states and 118255 transitions. [2022-11-03 02:19:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:19:24,037 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2022-11-03 02:19:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:24,372 INFO L225 Difference]: With dead ends: 73106 [2022-11-03 02:19:24,372 INFO L226 Difference]: Without dead ends: 73019 [2022-11-03 02:19:24,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:19:24,399 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 39 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:24,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 416 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:19:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73019 states. [2022-11-03 02:19:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73019 to 73014. [2022-11-03 02:19:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73014 states, 54389 states have (on average 1.4681461324900256) internal successors, (79851), 54393 states have internal predecessors, (79851), 18601 states have call successors, (18601), 23 states have call predecessors, (18601), 23 states have return successors, (18600), 18599 states have call predecessors, (18600), 18600 states have call successors, (18600) [2022-11-03 02:19:29,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73014 states to 73014 states and 117052 transitions. [2022-11-03 02:19:29,635 INFO L78 Accepts]: Start accepts. Automaton has 73014 states and 117052 transitions. Word has length 95 [2022-11-03 02:19:29,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:19:29,636 INFO L495 AbstractCegarLoop]: Abstraction has 73014 states and 117052 transitions. [2022-11-03 02:19:29,636 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, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:19:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 73014 states and 117052 transitions. [2022-11-03 02:19:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:19:29,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:19:29,670 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] [2022-11-03 02:19:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:19:29,670 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:19:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:19:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1540313628, now seen corresponding path program 1 times [2022-11-03 02:19:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:19:29,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902803023] [2022-11-03 02:19:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:19:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:19:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:19:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:19:31,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:19:31,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902803023] [2022-11-03 02:19:31,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902803023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:19:31,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:19:31,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-03 02:19:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645851585] [2022-11-03 02:19:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:19:31,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:19:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:19:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:19:31,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:19:31,372 INFO L87 Difference]: Start difference. First operand 73014 states and 117052 transitions. Second operand has 20 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-03 02:19:37,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:19:37,767 INFO L93 Difference]: Finished difference Result 73144 states and 117230 transitions. [2022-11-03 02:19:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:19:37,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 3.933333333333333) internal successors, (59), 16 states have internal predecessors, (59), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (14), 8 states have call predecessors, (14), 8 states have call successors, (14) Word has length 96 [2022-11-03 02:19:37,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:19:38,271 INFO L225 Difference]: With dead ends: 73144 [2022-11-03 02:19:38,271 INFO L226 Difference]: Without dead ends: 73140 [2022-11-03 02:19:38,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=1078, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:19:38,298 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 312 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:19:38,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2575 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 02:19:38,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73140 states.