./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa34593061e3e0a5eeea5cc3a3930a050ef50f60dff03c88799c643f69d7f641 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:24:51,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:24:51,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:24:51,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:24:51,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:24:51,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:24:51,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:24:51,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:24:51,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:24:51,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:24:51,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:24:51,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:24:51,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:24:51,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:24:51,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:24:51,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:24:51,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:24:51,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:24:51,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:24:51,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:24:51,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:24:51,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:24:51,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:24:51,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:24:51,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:24:51,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:24:51,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:24:51,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:24:51,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:24:51,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:24:51,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:24:51,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:24:51,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:24:51,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:24:51,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:24:51,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:24:51,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:24:51,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:24:51,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:24:51,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:24:51,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:24:51,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:24:51,121 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:24:51,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:24:51,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:24:51,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:24:51,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:24:51,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:24:51,123 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:24:51,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:24:51,124 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:24:51,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:24:51,124 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:24:51,124 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:24:51,125 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:24:51,125 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:24:51,125 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:24:51,125 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:24:51,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:24:51,126 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:24:51,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:24:51,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:24:51,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:24:51,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:24:51,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:24:51,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:24:51,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:24:51,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:24:51,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:24:51,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:24:51,129 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:24:51,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:24:51,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:24:51,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:24:51,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:51,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:24:51,131 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:24:51,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:24:51,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:24:51,131 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:24:51,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:24:51,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:24:51,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:24:51,132 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_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa34593061e3e0a5eeea5cc3a3930a050ef50f60dff03c88799c643f69d7f641 [2022-11-19 07:24:51,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:24:51,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:24:51,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:24:51,433 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:24:51,435 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:24:51,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec4_product23.cil.c [2022-11-19 07:24:51,508 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/data/67727e5e8/14a0a8965b9240778590ada135cda691/FLAGba7adb824 [2022-11-19 07:24:52,217 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:24:52,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c [2022-11-19 07:24:52,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/data/67727e5e8/14a0a8965b9240778590ada135cda691/FLAGba7adb824 [2022-11-19 07:24:52,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/data/67727e5e8/14a0a8965b9240778590ada135cda691 [2022-11-19 07:24:52,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:24:52,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:24:52,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:52,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:24:52,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:24:52,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:52" (1/1) ... [2022-11-19 07:24:52,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3db391f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:52, skipping insertion in model container [2022-11-19 07:24:52,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:52" (1/1) ... [2022-11-19 07:24:52,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:24:52,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:24:53,193 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c[63051,63064] [2022-11-19 07:24:53,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:53,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:24:53,314 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/sv-benchmarks/c/product-lines/email_spec4_product23.cil.c[63051,63064] [2022-11-19 07:24:53,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:53,350 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:24:53,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53 WrapperNode [2022-11-19 07:24:53,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:53,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:53,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:24:53,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:24:53,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,489 INFO L138 Inliner]: procedures = 130, calls = 218, calls flagged for inlining = 59, calls inlined = 52, statements flattened = 970 [2022-11-19 07:24:53,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:53,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:24:53,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:24:53,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:24:53,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,580 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:24:53,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:24:53,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:24:53,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:24:53,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:24:53,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:24:53,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:24:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:24:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:24:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-19 07:24:53,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-19 07:24:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-19 07:24:53,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-19 07:24:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:24:53,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:24:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:24:53,689 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-19 07:24:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:24:53,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:24:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:24:53,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:24:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:24:53,690 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:24:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:24:53,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:24:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:24:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:24:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:24:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:24:53,691 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:24:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:24:53,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:24:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:24:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:24:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:24:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-19 07:24:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-19 07:24:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:24:53,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:24:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:24:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:24:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:24:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:24:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:24:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:24:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:24:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:24:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:24:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:24:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:24:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:24:53,696 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:24:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-19 07:24:53,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-19 07:24:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:24:53,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:24:53,952 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:24:53,955 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:24:55,071 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:24:55,645 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:24:55,645 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:24:55,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:55 BoogieIcfgContainer [2022-11-19 07:24:55,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:24:55,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:24:55,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:24:55,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:24:55,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:24:52" (1/3) ... [2022-11-19 07:24:55,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fa2793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:55, skipping insertion in model container [2022-11-19 07:24:55,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (2/3) ... [2022-11-19 07:24:55,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fa2793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:55, skipping insertion in model container [2022-11-19 07:24:55,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:55" (3/3) ... [2022-11-19 07:24:55,662 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec4_product23.cil.c [2022-11-19 07:24:55,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:24:55,683 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:24:55,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:24:55,762 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;@47de07a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:24:55,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:24:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-19 07:24:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:24:55,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:55,783 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] [2022-11-19 07:24:55,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1503743867, now seen corresponding path program 1 times [2022-11-19 07:24:55,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:55,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514238315] [2022-11-19 07:24:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:55,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:24:56,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:56,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514238315] [2022-11-19 07:24:56,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514238315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:56,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:56,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:24:56,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380639830] [2022-11-19 07:24:56,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:56,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:24:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:24:56,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:24:56,305 INFO L87 Difference]: Start difference. First operand has 179 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:24:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:56,444 INFO L93 Difference]: Finished difference Result 266 states and 353 transitions. [2022-11-19 07:24:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:24:56,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-19 07:24:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:56,459 INFO L225 Difference]: With dead ends: 266 [2022-11-19 07:24:56,459 INFO L226 Difference]: Without dead ends: 176 [2022-11-19 07:24:56,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:24:56,466 INFO L413 NwaCegarLoop]: 202 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, 202 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 [2022-11-19 07:24:56,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 202 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:24:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-19 07:24:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-19 07:24:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 101 states have (on average 1.297029702970297) internal successors, (131), 103 states have internal predecessors, (131), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-19 07:24:56,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2022-11-19 07:24:56,527 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 65 [2022-11-19 07:24:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:56,529 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2022-11-19 07:24:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:24:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2022-11-19 07:24:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 07:24:56,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:56,534 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] [2022-11-19 07:24:56,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:24:56,535 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2139939892, now seen corresponding path program 1 times [2022-11-19 07:24:56,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:56,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220724677] [2022-11-19 07:24:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:56,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:24:56,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:56,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220724677] [2022-11-19 07:24:56,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220724677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:56,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:56,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:24:56,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168299315] [2022-11-19 07:24:56,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:56,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:24:56,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:24:56,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:24:56,742 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:24:56,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:56,900 INFO L93 Difference]: Finished difference Result 262 states and 338 transitions. [2022-11-19 07:24:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:24:56,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 66 [2022-11-19 07:24:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:56,903 INFO L225 Difference]: With dead ends: 262 [2022-11-19 07:24:56,903 INFO L226 Difference]: Without dead ends: 178 [2022-11-19 07:24:56,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:24:56,906 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 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 [2022-11-19 07:24:56,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:24:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-19 07:24:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-19 07:24:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 105 states have internal predecessors, (133), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-19 07:24:56,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 236 transitions. [2022-11-19 07:24:56,925 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 236 transitions. Word has length 66 [2022-11-19 07:24:56,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:56,926 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 236 transitions. [2022-11-19 07:24:56,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:24:56,926 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 236 transitions. [2022-11-19 07:24:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:24:56,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:56,929 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] [2022-11-19 07:24:56,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:24:56,930 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2073274980, now seen corresponding path program 1 times [2022-11-19 07:24:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:56,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551206547] [2022-11-19 07:24:56,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:56,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:24:57,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551206547] [2022-11-19 07:24:57,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551206547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:57,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:57,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:24:57,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517389025] [2022-11-19 07:24:57,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:57,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:24:57,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:57,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:24:57,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:24:57,051 INFO L87 Difference]: Start difference. First operand 178 states and 236 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:24:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:57,209 INFO L93 Difference]: Finished difference Result 391 states and 539 transitions. [2022-11-19 07:24:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:24:57,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 71 [2022-11-19 07:24:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:57,212 INFO L225 Difference]: With dead ends: 391 [2022-11-19 07:24:57,212 INFO L226 Difference]: Without dead ends: 231 [2022-11-19 07:24:57,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:24:57,215 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 59 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 413 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 [2022-11-19 07:24:57,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 413 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:24:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-19 07:24:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 226. [2022-11-19 07:24:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 137 states have (on average 1.3722627737226278) internal successors, (188), 139 states have internal predecessors, (188), 66 states have call successors, (66), 22 states have call predecessors, (66), 22 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-19 07:24:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 319 transitions. [2022-11-19 07:24:57,240 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 319 transitions. Word has length 71 [2022-11-19 07:24:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:57,241 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 319 transitions. [2022-11-19 07:24:57,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:24:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 319 transitions. [2022-11-19 07:24:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-19 07:24:57,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:57,245 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] [2022-11-19 07:24:57,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:24:57,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:57,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash 973881651, now seen corresponding path program 1 times [2022-11-19 07:24:57,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:57,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110478321] [2022-11-19 07:24:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:57,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:24:57,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:57,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110478321] [2022-11-19 07:24:57,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110478321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:24:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653481300] [2022-11-19 07:24:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:57,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:24:57,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:24:57,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:24:57,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:24:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:57,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:24:57,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:24:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:24:58,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:24:58,133 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:24:58,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653481300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:24:58,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1627563093] [2022-11-19 07:24:58,174 INFO L159 IcfgInterpreter]: Started Sifa with 59 locations of interest [2022-11-19 07:24:58,174 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:24:58,181 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:24:58,188 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:24:58,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:25:49,386 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:25:49,965 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:25:50,539 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 259 for LOIs [2022-11-19 07:25:52,587 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 237 for LOIs [2022-11-19 07:25:52,642 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 261 for LOIs [2022-11-19 07:25:55,963 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 265 for LOIs [2022-11-19 07:26:01,248 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 450 for LOIs [2022-11-19 07:26:02,237 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-19 07:26:07,639 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 247 for LOIs [2022-11-19 07:26:07,712 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 250 for LOIs [2022-11-19 07:26:07,789 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:26:14,361 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 519 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:27,508 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:32,953 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:26:55,493 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 486 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:01,334 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 498 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:08,122 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 508 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:19,398 WARN L233 SmtUtils]: Spent 10.92s on a formula simplification. DAG size of input: 589 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:32,385 WARN L233 SmtUtils]: Spent 12.64s on a formula simplification. DAG size of input: 585 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:27:56,986 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 473 DAG size of output: 271 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:28:04,069 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 495 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:28:23,878 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 450 DAG size of output: 261 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:28:30,100 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 476 DAG size of output: 270 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:28:56,668 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 512 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:12,908 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 519 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:21,347 WARN L233 SmtUtils]: Spent 7.67s on a formula simplification. DAG size of input: 522 DAG size of output: 408 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:29:21,352 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3089#(and (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1|) (= ~__GUIDSL_NON_TERMINAL_main~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1| 1) (= ~__SELECTED_FEATURE_Sign~0 0) (= ~__ste_client_outbuffer3~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~handle#1| 1) (= ~__ste_Client_counter~0 0) (<= 1 |outgoing__wrappee__AutoResponder_#in~msg#1|) (<= ~__ste_email_isSignatureVerified1~0 0) (<= |old(~__ste_email_to0~0)| 2) (= ~__ste_Client_AddressBook2_Alias0~0 0) (= 0 ~__ste_email_subject0~0.base) (<= |outgoing__wrappee__AutoResponder_~client#1| 1) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1| 1) (= ~__ste_Client_Keyring2_PublicKey2~0 0) (<= 0 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1|) (<= |old(~queued_client~0)| 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~msg#1| 1) (<= 2 |old(~__ste_email_to0~0)|) (<= 0 |old(~queued_message~0)|) (<= |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1| 1) (<= ~__ste_client_idCounter2~0 3) (<= ~queued_message~0 0) (<= |old(~__ste_email_from0~0)| 0) (<= ~__ste_email_isSignatureVerified0~0 0) (= ~__SELECTED_FEATURE_Encrypt~0 0) (= ~__ste_Client_AddressBook1_Address2~0 0) (<= ~__ste_email_from0~0 2147483647) (= ~__ste_ClientAddressBook_size1~0 0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~msg#1|) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg1~0#1|) (= ~__ste_email_body0~0.offset 0) (<= 0 ~__ste_email_isSigned1~0) (<= 0 (+ ~__ste_email_from0~0 2147483648)) (= ~__ste_Client_Keyring0_User2~0 0) (= ~__ste_ClientAddressBook_size0~0 0) (= ~__ste_Client_Keyring0_User1~0 0) (= ~__ste_Client_AddressBook1_Alias1~0 0) (= ~__ste_client_name1~0.offset 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483648)) (<= ~__ste_Client_AddressBook2_Address0~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~client#1|) (<= ~__ste_email_id0~0 0) (<= 0 ~__ste_client_name2~0.offset) (= ~head~0.offset 0) (<= ~__GUIDSL_ROOT_PRODUCTION~0 0) (<= ~__ste_Client_AddressBook2_Alias1~0 0) (<= 0 ~__GUIDSL_ROOT_PRODUCTION~0) (<= ~__ste_client_autoResponse1~0 1) (= ~__ste_Client_Keyring0_PublicKey2~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483647) (<= ~__ste_Email_counter~0 0) (<= ~__ste_Client_Keyring2_User2~0 0) (<= ~__ste_email_body1~0.offset 0) (<= ~__ste_client_privateKey2~0 789) (<= |outgoing__wrappee__AutoResponder_~tmp~10#1| 2147483647) (= ~__ste_Client_Keyring1_PublicKey0~0 0) (<= |old(~queued_message~0)| 0) (<= 1 |old(~queue_empty~0)|) (<= ~queue_empty~0 1) (<= |outgoing__wrappee__AutoResponder_mail_#in~client#1| 1) (<= 0 ~__ste_Client_AddressBook2_Alias1~0) (<= 0 ~__ste_Client_Keyring2_User2~0) (= ~__SELECTED_FEATURE_Decrypt~0 0) (<= 1 |outgoing__wrappee__AutoResponder_~msg#1|) (<= 0 ~__ste_Client_Keyring1_User2~0) (<= 0 (+ ~__ste_email_signKey0~0 2147483648)) (<= 0 ~__ste_email_isEncrypted1~0) (= ~__SELECTED_FEATURE_Keys~0 0) (<= ~__ste_email_signKey0~0 2147483647) (<= 0 |old(~__ste_email_from0~0)|) (<= |#NULL.offset| 0) (<= 0 ~__ste_Client_Keyring1_User0~0) (<= 0 ~__SELECTED_FEATURE_AddressBook~0) (<= |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1| 1) (= ~__ste_Client_Keyring0_PublicKey1~0 0) (= ~__SELECTED_FEATURE_Forward~0 0) (<= 0 ~__ste_email_isEncrypted0~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_#in~handle#1|) (= ~__ste_Client_Keyring0_User0~0 0) (<= ~__ste_client_idCounter0~0 2147483647) (= ~__ste_Client_Keyring2_PublicKey1~0 0) (<= 0 ~__ste_email_id1~0) (<= |outgoing__wrappee__AutoResponder_mail_~client#1| 1) (<= ~__ste_Client_AddressBook0_Address1~0 0) (= ~__ste_email_body0~0.base 0) (<= ~__ste_email_isSigned0~0 1) (<= ~__ste_email_isEncrypted0~0 0) (= ~__ste_Client_AddressBook0_Alias0~0 0) (<= 0 ~__ste_Client_AddressBook2_Address1~0) (<= 0 ~__ste_client_name0~0.offset) (<= ~__ste_Client_Keyring0_PublicKey0~0 0) (<= ~__ste_client_name1~0.base 0) (<= ~__ste_client_autoResponse0~0 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1| 1) (<= ~__SELECTED_FEATURE_AddressBook~0 0) (<= |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483647) (<= ~__ste_Client_Keyring1_PublicKey2~0 0) (<= 0 ~__ste_Client_Keyring0_PublicKey0~0) (<= ~__ste_client_forwardReceiver3~0 0) (<= 3 ~__ste_client_idCounter2~0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~client#1|) (= ~__ste_Client_AddressBook2_Address2~0 0) (<= 0 ~__ste_Client_Keyring1_PublicKey2~0) (<= ~__ste_Client_AddressBook0_Address0~0 0) (= 3 ~chuck~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1|) (<= 0 ~__ste_email_signKey1~0) (<= 0 ~__ste_email_body1~0.offset) (<= 1 ~queue_empty~0) (<= ~__ste_email_signKey1~0 0) (<= 0 ~__ste_client_forwardReceiver3~0) (<= ~__ste_client_name2~0.offset 0) (<= ~__ste_email_isSigned1~0 0) (<= 0 ~__ste_Email_counter~0) (<= ~__ste_email_subject0~0.offset 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_~msg#1|) (<= 0 ~__ste_client_autoResponse0~0) (<= 0 ~__ste_Client_AddressBook0_Alias2~0) (<= 0 ~queued_message~0) (<= 0 |old(~__ste_email_isSignatureVerified0~0)|) (<= 0 ~__ste_email_isSignatureVerified1~0) (= ~__ste_client_outbuffer0~0 0) (<= 789 ~__ste_client_privateKey2~0) (<= ~__SELECTED_FEATURE_Verify~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_~retValue_acc~16#1| 2147483648)) (<= ~__ste_ClientKeyring_size1~0 0) (<= ~__ste_Client_Keyring1_User2~0 0) (<= 1 |outgoing__wrappee__AutoResponder_mail_#in~msg#1|) (<= 0 ~head~0.base) (= ~__SELECTED_FEATURE_Base~0 0) (<= ~__ste_Client_AddressBook1_Alias2~0 0) (<= 0 ~__ste_Client_AddressBook0_Address2~0) (= ~__ste_client_forwardReceiver0~0 0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| 0) (= ~__ste_Client_Keyring2_User0~0 0) (<= 0 (+ |outgoing__wrappee__AutoResponder_getClientId_#res#1| 2147483648)) (<= 0 ~__ste_email_subject0~0.offset) (= ~rjh~0 2) (<= 0 ~__ste_Client_AddressBook1_Alias0~0) (<= |outgoing__wrappee__AutoResponder_#in~client#1| 1) (= ~__ste_Client_Keyring1_PublicKey1~0 0) (<= 0 ~queued_client~0) (<= ~__ste_Client_AddressBook1_Alias0~0 0) (= ~__ste_Client_Keyring2_PublicKey0~0 0) (<= 0 ~__ste_email_isSignatureVerified0~0) (= ~__ste_Client_AddressBook1_Address0~0 0) (<= 0 ~__ste_ClientKeyring_size1~0) (<= 0 ~__ste_client_forwardReceiver2~0) (= ~__ste_client_name2~0.base 0) (<= 0 ~__ste_Client_AddressBook0_Address1~0) (<= 0 |old(~queued_client~0)|) (<= ~__ste_email_encryptionKey0~0 0) (= ~__ste_email_subject1~0.base 0) (<= ~__ste_ClientKeyring_size0~0 0) (<= ~__ste_email_id1~0 0) (<= |old(~queue_empty~0)| 1) (<= 0 ~__ste_Client_AddressBook0_Address0~0) (<= |outgoing__wrappee__AutoResponder_#in~msg#1| 1) (<= ~__ste_Client_Keyring1_User0~0 0) (<= |outgoing__wrappee__AutoResponder_mail_~msg#1| 1) (<= ~__ste_Client_AddressBook0_Alias2~0 0) (<= ~__ste_Client_AddressBook0_Address2~0 0) (<= 1 ~__ste_client_autoResponse1~0) (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp~5#1| ~__ste_client_privateKey0~0) (<= ~head~0.base 0) (<= ~__ste_client_forwardReceiver1~0 0) (= ~__ste_Client_Keyring1_User1~0 0) (<= |outgoing__wrappee__AutoResponder_mail_#in~msg#1| 1) (= ~__ste_Client_AddressBook2_Alias2~0 0) (<= ~__ste_Client_Keyring2_User1~0 0) (<= 0 ~__ste_email_isSigned0~0) (<= 0 ~__SELECTED_FEATURE_Verify~0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~client#1| 1) (<= 0 ~__ste_Client_AddressBook1_Alias2~0) (<= |outgoing__wrappee__AutoResponder_~msg#1| 1) (<= 0 ~__ste_client_autoResponse2~0) (<= 1 |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_#in~client#1|) (= ~__ste_email_subject1~0.offset 0) (<= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 1) (<= 1 |outgoing__wrappee__AutoResponder_#in~client#1|) (<= 0 ~__ste_Client_AddressBook2_Address0~0) (<= 0 ~__ste_Client_Keyring2_User1~0) (= ~__ste_Client_AddressBook1_Address1~0 0) (<= ~__ste_client_name0~0.offset 0) (= ~__ste_client_outbuffer1~0 0) (not (= |outgoing__wrappee__AutoResponder___utac_acc__SignForward_spec__1_~tmp___0~0#1| 0)) (= ~__ste_Client_AddressBook0_Alias1~0 0) (<= 0 ~__ste_ClientKeyring_size0~0) (<= ~__ste_email_isEncrypted1~0 0) (<= |old(~__ste_email_isSignatureVerified0~0)| 0) (<= 0 |#NULL.offset|) (<= |old(~__ste_email_isSignatureVerified1~0)| 0) (<= 0 ~__ste_client_forwardReceiver1~0) (<= 1 |outgoing__wrappee__AutoResponder_getClientId_~handle#1|) (= ~__ste_client_name0~0.base 0) (<= 0 |old(~__ste_email_isSignatureVerified1~0)|) (<= ~__ste_Client_AddressBook2_Address1~0 0) (= ~__ste_client_outbuffer2~0 0) (<= ~bob~0 1) (<= 1 |outgoing__wrappee__AutoResponder_mail_~__utac__ad__arg2~0#1|) (<= 0 (+ ~__ste_client_idCounter0~0 2147483648)) (<= ~__ste_client_forwardReceiver2~0 0) (<= 2 ~__ste_email_to0~0) (<= 0 |#StackHeapBarrier|) (<= ~__ste_email_to0~0 2) (<= 1 |outgoing__wrappee__AutoResponder_~client#1|) (= ~__ste_ClientAddressBook_size2~0 0) (= ~__SELECTED_FEATURE_AutoResponder~0 0) (<= ~__ste_client_autoResponse2~0 0) (= ~__ste_email_encryptionKey1~0 0) (= ~__ste_email_body1~0.base 0) (<= 1 ~bob~0) (= ~__ste_ClientKeyring_size2~0 0) (<= 0 ~__ste_client_name1~0.base) (<= 0 ~__ste_email_id0~0) (<= 0 ~__ste_email_encryptionKey0~0) (= |#NULL.base| 0) (<= ~queued_client~0 0))' at error location [2022-11-19 07:29:21,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:29:21,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:29:21,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 07:29:21,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125319159] [2022-11-19 07:29:21,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:29:21,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:29:21,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:29:21,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=3147, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 07:29:21,357 INFO L87 Difference]: Start difference. First operand 226 states and 319 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:29:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:21,712 INFO L93 Difference]: Finished difference Result 585 states and 888 transitions. [2022-11-19 07:29:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:29:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 72 [2022-11-19 07:29:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:21,721 INFO L225 Difference]: With dead ends: 585 [2022-11-19 07:29:21,721 INFO L226 Difference]: Without dead ends: 501 [2022-11-19 07:29:21,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 193.5s TimeCoverageRelationStatistics Valid=159, Invalid=3147, Unknown=0, NotChecked=0, Total=3306 [2022-11-19 07:29:21,731 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 224 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:21,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 876 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:29:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-11-19 07:29:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 486. [2022-11-19 07:29:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 318 states have (on average 1.490566037735849) internal successors, (474), 320 states have internal predecessors, (474), 145 states have call successors, (145), 22 states have call predecessors, (145), 22 states have return successors, (144), 143 states have call predecessors, (144), 144 states have call successors, (144) [2022-11-19 07:29:21,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 763 transitions. [2022-11-19 07:29:21,811 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 763 transitions. Word has length 72 [2022-11-19 07:29:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:21,813 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 763 transitions. [2022-11-19 07:29:21,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:29:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 763 transitions. [2022-11-19 07:29:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 07:29:21,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:21,827 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:21,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:29:22,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:22,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1215459377, now seen corresponding path program 1 times [2022-11-19 07:29:22,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:22,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725629537] [2022-11-19 07:29:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:22,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:22,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725629537] [2022-11-19 07:29:22,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725629537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:22,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:22,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:22,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289939548] [2022-11-19 07:29:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:22,171 INFO L87 Difference]: Start difference. First operand 486 states and 763 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:22,302 INFO L93 Difference]: Finished difference Result 1202 states and 1924 transitions. [2022-11-19 07:29:22,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:22,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 78 [2022-11-19 07:29:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:22,309 INFO L225 Difference]: With dead ends: 1202 [2022-11-19 07:29:22,309 INFO L226 Difference]: Without dead ends: 748 [2022-11-19 07:29:22,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:22,311 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 57 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 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 [2022-11-19 07:29:22,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 418 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:22,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-19 07:29:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 743. [2022-11-19 07:29:22,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 496 states have (on average 1.5060483870967742) internal successors, (747), 498 states have internal predecessors, (747), 224 states have call successors, (224), 22 states have call predecessors, (224), 22 states have return successors, (223), 222 states have call predecessors, (223), 223 states have call successors, (223) [2022-11-19 07:29:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1194 transitions. [2022-11-19 07:29:22,366 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1194 transitions. Word has length 78 [2022-11-19 07:29:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:22,366 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1194 transitions. [2022-11-19 07:29:22,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1194 transitions. [2022-11-19 07:29:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 07:29:22,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:22,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:22,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:29:22,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:22,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:22,378 INFO L85 PathProgramCache]: Analyzing trace with hash -151556577, now seen corresponding path program 1 times [2022-11-19 07:29:22,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:22,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673853248] [2022-11-19 07:29:22,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:22,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:22,489 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:22,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673853248] [2022-11-19 07:29:22,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673853248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:22,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:22,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:22,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404610056] [2022-11-19 07:29:22,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:22,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:22,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:22,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:22,493 INFO L87 Difference]: Start difference. First operand 743 states and 1194 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:22,667 INFO L93 Difference]: Finished difference Result 1824 states and 2971 transitions. [2022-11-19 07:29:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:22,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 79 [2022-11-19 07:29:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:22,675 INFO L225 Difference]: With dead ends: 1824 [2022-11-19 07:29:22,675 INFO L226 Difference]: Without dead ends: 1143 [2022-11-19 07:29:22,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:22,679 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 55 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 408 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 [2022-11-19 07:29:22,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:22,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2022-11-19 07:29:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1138. [2022-11-19 07:29:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 772 states have (on average 1.511658031088083) internal successors, (1167), 774 states have internal predecessors, (1167), 343 states have call successors, (343), 22 states have call predecessors, (343), 22 states have return successors, (342), 341 states have call predecessors, (342), 342 states have call successors, (342) [2022-11-19 07:29:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1852 transitions. [2022-11-19 07:29:22,768 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1852 transitions. Word has length 79 [2022-11-19 07:29:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:22,768 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1852 transitions. [2022-11-19 07:29:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1852 transitions. [2022-11-19 07:29:22,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 07:29:22,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:22,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:29:22,781 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:22,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1077608547, now seen corresponding path program 1 times [2022-11-19 07:29:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:22,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184050897] [2022-11-19 07:29:22,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:22,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:22,886 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:22,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184050897] [2022-11-19 07:29:22,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184050897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:22,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:22,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64329887] [2022-11-19 07:29:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:22,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:22,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:22,889 INFO L87 Difference]: Start difference. First operand 1138 states and 1852 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:23,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:23,076 INFO L93 Difference]: Finished difference Result 2727 states and 4483 transitions. [2022-11-19 07:29:23,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:23,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 80 [2022-11-19 07:29:23,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:23,086 INFO L225 Difference]: With dead ends: 2727 [2022-11-19 07:29:23,086 INFO L226 Difference]: Without dead ends: 1731 [2022-11-19 07:29:23,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:23,091 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 53 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 403 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 [2022-11-19 07:29:23,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 403 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:23,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2022-11-19 07:29:23,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1726. [2022-11-19 07:29:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1198 states have (on average 1.515025041736227) internal successors, (1815), 1200 states have internal predecessors, (1815), 505 states have call successors, (505), 22 states have call predecessors, (505), 22 states have return successors, (504), 503 states have call predecessors, (504), 504 states have call successors, (504) [2022-11-19 07:29:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2824 transitions. [2022-11-19 07:29:23,199 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2824 transitions. Word has length 80 [2022-11-19 07:29:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:23,199 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2824 transitions. [2022-11-19 07:29:23,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2824 transitions. [2022-11-19 07:29:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-19 07:29:23,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:23,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:29:23,207 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:23,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1525740002, now seen corresponding path program 1 times [2022-11-19 07:29:23,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:23,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474807076] [2022-11-19 07:29:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:23,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:23,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474807076] [2022-11-19 07:29:23,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474807076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:23,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:23,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:23,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703057830] [2022-11-19 07:29:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:23,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:23,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:23,285 INFO L87 Difference]: Start difference. First operand 1726 states and 2824 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:23,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:23,535 INFO L93 Difference]: Finished difference Result 4112 states and 6791 transitions. [2022-11-19 07:29:23,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:23,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2022-11-19 07:29:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:23,554 INFO L225 Difference]: With dead ends: 4112 [2022-11-19 07:29:23,554 INFO L226 Difference]: Without dead ends: 2665 [2022-11-19 07:29:23,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:23,561 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 51 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 403 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 [2022-11-19 07:29:23,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 403 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-11-19 07:29:23,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2660. [2022-11-19 07:29:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2660 states, 1887 states have (on average 1.516163222045575) internal successors, (2861), 1889 states have internal predecessors, (2861), 750 states have call successors, (750), 22 states have call predecessors, (750), 22 states have return successors, (749), 748 states have call predecessors, (749), 749 states have call successors, (749) [2022-11-19 07:29:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 4360 transitions. [2022-11-19 07:29:23,805 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 4360 transitions. Word has length 81 [2022-11-19 07:29:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:23,806 INFO L495 AbstractCegarLoop]: Abstraction has 2660 states and 4360 transitions. [2022-11-19 07:29:23,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 4360 transitions. [2022-11-19 07:29:23,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-19 07:29:23,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:23,815 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] [2022-11-19 07:29:23,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:29:23,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:23,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:23,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1983027417, now seen corresponding path program 1 times [2022-11-19 07:29:23,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:23,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103074307] [2022-11-19 07:29:23,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:23,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:23,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:23,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103074307] [2022-11-19 07:29:23,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103074307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:23,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:23,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201815185] [2022-11-19 07:29:23,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:23,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:23,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:23,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:23,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:23,924 INFO L87 Difference]: Start difference. First operand 2660 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:24,281 INFO L93 Difference]: Finished difference Result 6628 states and 10951 transitions. [2022-11-19 07:29:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2022-11-19 07:29:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:24,309 INFO L225 Difference]: With dead ends: 6628 [2022-11-19 07:29:24,309 INFO L226 Difference]: Without dead ends: 4390 [2022-11-19 07:29:24,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:24,321 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 49 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 419 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 [2022-11-19 07:29:24,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 419 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2022-11-19 07:29:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4385. [2022-11-19 07:29:24,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 3119 states have (on average 1.504969541519718) internal successors, (4694), 3121 states have internal predecessors, (4694), 1243 states have call successors, (1243), 22 states have call predecessors, (1243), 22 states have return successors, (1242), 1241 states have call predecessors, (1242), 1242 states have call successors, (1242) [2022-11-19 07:29:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 7179 transitions. [2022-11-19 07:29:24,732 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 7179 transitions. Word has length 82 [2022-11-19 07:29:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 7179 transitions. [2022-11-19 07:29:24,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:24,733 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 7179 transitions. [2022-11-19 07:29:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:29:24,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:24,745 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] [2022-11-19 07:29:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:29:24,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:24,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1392771930, now seen corresponding path program 1 times [2022-11-19 07:29:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860334447] [2022-11-19 07:29:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:24,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:24,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:24,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860334447] [2022-11-19 07:29:24,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860334447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:24,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:24,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:24,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241432481] [2022-11-19 07:29:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:24,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:24,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:24,836 INFO L87 Difference]: Start difference. First operand 4385 states and 7179 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:25,402 INFO L93 Difference]: Finished difference Result 11044 states and 18236 transitions. [2022-11-19 07:29:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:25,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2022-11-19 07:29:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:25,444 INFO L225 Difference]: With dead ends: 11044 [2022-11-19 07:29:25,444 INFO L226 Difference]: Without dead ends: 7347 [2022-11-19 07:29:25,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:25,459 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 47 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 408 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 [2022-11-19 07:29:25,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7347 states. [2022-11-19 07:29:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7347 to 7342. [2022-11-19 07:29:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7342 states, 5254 states have (on average 1.4996193376475067) internal successors, (7879), 5256 states have internal predecessors, (7879), 2065 states have call successors, (2065), 22 states have call predecessors, (2065), 22 states have return successors, (2064), 2063 states have call predecessors, (2064), 2064 states have call successors, (2064) [2022-11-19 07:29:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7342 states to 7342 states and 12008 transitions. [2022-11-19 07:29:26,145 INFO L78 Accepts]: Start accepts. Automaton has 7342 states and 12008 transitions. Word has length 83 [2022-11-19 07:29:26,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:26,146 INFO L495 AbstractCegarLoop]: Abstraction has 7342 states and 12008 transitions. [2022-11-19 07:29:26,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:26,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7342 states and 12008 transitions. [2022-11-19 07:29:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 07:29:26,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:26,165 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] [2022-11-19 07:29:26,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:29:26,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:26,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:26,166 INFO L85 PathProgramCache]: Analyzing trace with hash 710514405, now seen corresponding path program 1 times [2022-11-19 07:29:26,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:26,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302784357] [2022-11-19 07:29:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:26,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:26,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:26,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302784357] [2022-11-19 07:29:26,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302784357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:26,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:26,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603639114] [2022-11-19 07:29:26,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:26,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:26,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:26,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:26,283 INFO L87 Difference]: Start difference. First operand 7342 states and 12008 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:27,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:27,238 INFO L93 Difference]: Finished difference Result 18511 states and 30498 transitions. [2022-11-19 07:29:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:27,239 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-11-19 07:29:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:27,312 INFO L225 Difference]: With dead ends: 18511 [2022-11-19 07:29:27,312 INFO L226 Difference]: Without dead ends: 12291 [2022-11-19 07:29:27,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:27,333 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 45 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 404 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 [2022-11-19 07:29:27,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 404 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12291 states. [2022-11-19 07:29:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12291 to 12286. [2022-11-19 07:29:28,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12286 states, 8995 states have (on average 1.500833796553641) internal successors, (13500), 8997 states have internal predecessors, (13500), 3268 states have call successors, (3268), 22 states have call predecessors, (3268), 22 states have return successors, (3267), 3266 states have call predecessors, (3267), 3267 states have call successors, (3267) [2022-11-19 07:29:28,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12286 states to 12286 states and 20035 transitions. [2022-11-19 07:29:28,573 INFO L78 Accepts]: Start accepts. Automaton has 12286 states and 20035 transitions. Word has length 84 [2022-11-19 07:29:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:28,574 INFO L495 AbstractCegarLoop]: Abstraction has 12286 states and 20035 transitions. [2022-11-19 07:29:28,574 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 12286 states and 20035 transitions. [2022-11-19 07:29:28,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 07:29:28,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:28,591 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] [2022-11-19 07:29:28,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:29:28,592 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:28,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:28,592 INFO L85 PathProgramCache]: Analyzing trace with hash -864459847, now seen corresponding path program 1 times [2022-11-19 07:29:28,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:28,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48027742] [2022-11-19 07:29:28,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:28,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:28,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:28,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48027742] [2022-11-19 07:29:28,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48027742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:28,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:28,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:28,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429216939] [2022-11-19 07:29:28,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:28,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:28,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:28,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:28,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:28,742 INFO L87 Difference]: Start difference. First operand 12286 states and 20035 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:30,569 INFO L93 Difference]: Finished difference Result 32515 states and 53360 transitions. [2022-11-19 07:29:30,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:30,570 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2022-11-19 07:29:30,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:30,693 INFO L225 Difference]: With dead ends: 32515 [2022-11-19 07:29:30,693 INFO L226 Difference]: Without dead ends: 21803 [2022-11-19 07:29:30,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:30,728 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 43 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 408 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 [2022-11-19 07:29:30,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:30,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21803 states. [2022-11-19 07:29:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21803 to 21798. [2022-11-19 07:29:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21798 states, 16057 states have (on average 1.4929937099084511) internal successors, (23973), 16059 states have internal predecessors, (23973), 5718 states have call successors, (5718), 22 states have call predecessors, (5718), 22 states have return successors, (5717), 5716 states have call predecessors, (5717), 5717 states have call successors, (5717) [2022-11-19 07:29:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21798 states to 21798 states and 35408 transitions. [2022-11-19 07:29:32,593 INFO L78 Accepts]: Start accepts. Automaton has 21798 states and 35408 transitions. Word has length 85 [2022-11-19 07:29:32,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:32,594 INFO L495 AbstractCegarLoop]: Abstraction has 21798 states and 35408 transitions. [2022-11-19 07:29:32,594 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:32,594 INFO L276 IsEmpty]: Start isEmpty. Operand 21798 states and 35408 transitions. [2022-11-19 07:29:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-19 07:29:32,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:32,616 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:32,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:29:32,616 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:32,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1599487861, now seen corresponding path program 1 times [2022-11-19 07:29:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:32,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318436669] [2022-11-19 07:29:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:32,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:32,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318436669] [2022-11-19 07:29:32,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318436669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:32,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:32,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:32,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87800904] [2022-11-19 07:29:32,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:32,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:32,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:32,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:32,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:32,716 INFO L87 Difference]: Start difference. First operand 21798 states and 35408 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:35,235 INFO L93 Difference]: Finished difference Result 59202 states and 96612 transitions. [2022-11-19 07:29:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:35,236 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-11-19 07:29:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:35,425 INFO L225 Difference]: With dead ends: 59202 [2022-11-19 07:29:35,425 INFO L226 Difference]: Without dead ends: 39573 [2022-11-19 07:29:35,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:35,486 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 41 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 408 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 [2022-11-19 07:29:35,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39573 states. [2022-11-19 07:29:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39573 to 39568. [2022-11-19 07:29:38,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39568 states, 29314 states have (on average 1.4821928088967729) internal successors, (43449), 29316 states have internal predecessors, (43449), 10231 states have call successors, (10231), 22 states have call predecessors, (10231), 22 states have return successors, (10230), 10229 states have call predecessors, (10230), 10230 states have call successors, (10230) [2022-11-19 07:29:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39568 states to 39568 states and 63910 transitions. [2022-11-19 07:29:38,769 INFO L78 Accepts]: Start accepts. Automaton has 39568 states and 63910 transitions. Word has length 86 [2022-11-19 07:29:38,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:38,770 INFO L495 AbstractCegarLoop]: Abstraction has 39568 states and 63910 transitions. [2022-11-19 07:29:38,770 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 39568 states and 63910 transitions. [2022-11-19 07:29:38,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:29:38,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:38,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:38,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:29:38,796 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:38,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:38,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1870687129, now seen corresponding path program 1 times [2022-11-19 07:29:38,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:38,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284622630] [2022-11-19 07:29:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:29:38,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284622630] [2022-11-19 07:29:38,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284622630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:38,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:38,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:29:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659241242] [2022-11-19 07:29:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:38,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:29:38,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:29:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:38,884 INFO L87 Difference]: Start difference. First operand 39568 states and 63910 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:42,513 INFO L93 Difference]: Finished difference Result 73100 states and 118247 transitions. [2022-11-19 07:29:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:29:42,513 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2022-11-19 07:29:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:42,810 INFO L225 Difference]: With dead ends: 73100 [2022-11-19 07:29:42,810 INFO L226 Difference]: Without dead ends: 73016 [2022-11-19 07:29:42,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:29:42,836 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 39 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 408 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 [2022-11-19 07:29:42,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73016 states. [2022-11-19 07:29:47,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73016 to 73011. [2022-11-19 07:29:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73011 states, 54389 states have (on average 1.4681461324900256) internal successors, (79851), 54391 states have internal predecessors, (79851), 18599 states have call successors, (18599), 22 states have call predecessors, (18599), 22 states have return successors, (18598), 18597 states have call predecessors, (18598), 18598 states have call successors, (18598) [2022-11-19 07:29:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73011 states to 73011 states and 117048 transitions. [2022-11-19 07:29:48,264 INFO L78 Accepts]: Start accepts. Automaton has 73011 states and 117048 transitions. Word has length 87 [2022-11-19 07:29:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:48,264 INFO L495 AbstractCegarLoop]: Abstraction has 73011 states and 117048 transitions. [2022-11-19 07:29:48,265 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, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:29:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand 73011 states and 117048 transitions. [2022-11-19 07:29:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:29:48,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:48,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:29:48,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:29:48,286 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1926255700, now seen corresponding path program 1 times [2022-11-19 07:29:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:48,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193399221] [2022-11-19 07:29:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:29:50,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193399221] [2022-11-19 07:29:50,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193399221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:29:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178776338] [2022-11-19 07:29:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:50,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:50,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:50,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a323e85-ed56-41e5-8f7d-7811ebbbf953/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:29:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:50,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1061 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-19 07:29:50,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:29:51,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:29:56,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178776338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:56,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2129411920] [2022-11-19 07:29:56,161 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-19 07:29:56,161 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:29:56,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:29:56,162 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:29:56,162 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:30:23,986 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 07:30:24,279 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 07:30:24,578 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 255 for LOIs [2022-11-19 07:30:26,125 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 233 for LOIs [2022-11-19 07:30:26,160 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 255 for LOIs [2022-11-19 07:30:28,945 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 261 for LOIs [2022-11-19 07:30:33,055 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 454 for LOIs [2022-11-19 07:30:33,604 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-19 07:30:38,241 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 243 for LOIs [2022-11-19 07:30:38,282 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 246 for LOIs [2022-11-19 07:30:38,323 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:30:45,676 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 523 DAG size of output: 381 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:30:59,671 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 444 DAG size of output: 244 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:05,510 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 467 DAG size of output: 264 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:30,505 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 486 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:36,701 WARN L233 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 498 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:31:43,968 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 508 DAG size of output: 297 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)